Seven mistakes that can hurt you in a New Jersey custody case, from lying under oath to stopping child support, and what the judge looks for.
Best for the Children Editorial·13 min read·June 25, 2026·Updated October 27, 2026
It's 11 p.m., your ex has sent a text that makes your jaw tighten, and you're already typing a reply. Before you hit send, know this: while a custody case is open, the choices that hurt parents most are rarely dramatic. They're everyday reactions. Don't ignore orders or deadlines. Don't use parenting time or support as leverage. Don't pull your children into the fight, or escalate conflict. Don't bend the truth or the evidence, let daily care slip, or make big moves alone. Here's what each looks like, what to do instead, and where safety changes the rules.
Custody isn't a contest a parent wins by scoring points against the other. Bremer Whyte's family lawyers criticize treating the best-interest factors as a competitive scorecard. The question courts ask is narrower and harder: what arrangement serves this child?
State law frames that question differently:
That last point matters for everything below. A single mistake rarely decides a case. What a judge may weigh is a pattern of conduct and its effect on your child. Consequences also vary: some mistakes damage your credibility, some lead to enforcement or sanctions, and some lead to limits on parenting time. Which one applies depends on the facts, your state's law and the order in your case.
What to avoid: treating a temporary order as optional because you think it's unfair, or treating court papers like another argument with your ex.
Why it matters: Modern Family Law explains that temporary orders stay enforceable until they are modified, stayed or replaced. Disagreeing with an order generally doesn't suspend it. Court deadlines are just as firm. Wisconsin's divorce summons, for example, tells a respondent with minor children to file a proper written response within 20 days. Otherwise, judgment may be entered against them.
What to do instead: keep two tracks separate. DivorceX points out that an accusatory text and a court filing call for different responses. Replying to your ex does nothing to meet a court deadline. If an order isn't working, ask the court to change it. Don't quietly stop following it.
One more trap: Collins Family & Elder Law Group warns against emailing the judge to protest a ruling. Objections go through proper filings, not personal messages.
What to avoid: "No check, no weekend." Also the reverse: "I'm not paying until I see the kids."
Why it matters: Florida's statute spells this out. A parent may not withhold time-sharing because support is unpaid. A parent who is denied time-sharing must keep paying ordered support. Even where your state's law is less explicit, the two obligations are generally handled separately, and each has its own remedy.
The same logic applies to smaller things:
What to do instead: if the other parent isn't paying, or isn't showing up, write down what happened and raise it through the court process. Don't settle the score at the front door.
Once the money and the schedule are off the table as weapons, the next temptation is the children themselves.
What to avoid:
Tarrant County Family Court Services in Texas tells parents not to use children as messengers or expect them to provide emotional support. A Utah family-law guide warns against recruiting children as spies. Modern Family Law cautions against coaching children before they meet with evaluators or other appointed professionals.
What to do instead:
If your child refuses to go: don't jump to "they've been turned against me." New Jersey's amended law says courts must not presume that the other parent caused a child's reluctance to spend time with a parent. Reluctance calls for asking why, especially when safety could be the reason. Custody X Change notes that children are more often heard through evaluator interviews or, in some cases, a private interview with the judge. They aren't heard by being pressured at home.
Children feel conflict most at handoffs. That's where a tense text turns into a scene in the parking lot.
What to avoid: threats, shouting, blocking the other parent's calls with the child, and property damage. Cordell & Cordell lists the last two among behaviors that can sabotage a case.
What to do instead:
A short exchange checklist:
That last checklist item leads straight into evidence. How you handle the truth and the records can matter as much as what they show.
Honesty. Perjury is a serious crime, but it isn't an honest mistake. North Carolina's statute requires a false statement made knowingly and intentionally, under specified circumstances, and classifies it as a Class F felony. If you realize something you said was wrong, correct it. Be just as candid with your own lawyer. Virginia attorney Jonathan McHugh advises telling your attorney the unfavorable facts too, because a surprise later can damage your case preparation.
Records. Keep them, and keep them honest:
**Social media cuts both ways.** In Fatherly, California family-law specialist Lisa Helfend Meyer describes a client who claimed financial hardship. A social media post showing a 2½-carat engagement ring was used to challenge that claim. It's one lawyer's story, not a published ruling, but the lesson travels well.
Recording. Don't assume. Washington's law generally requires every participant's consent to record a private conversation, with exceptions that include certain threats and emergencies. Other states follow different rules. "Record everything" and "recording is always illegal" are both bad advice. Check your state's law first.
A binder isn't automatically evidence. DivorceX notes that an organized packet doesn't by itself meet requirements for authentication, relevance, privacy, filing, service or exhibits.
A simple parenting-log format:
Log the good days and your own involvement too, not just the other parent's lapses. A one-sided log reads as one-sided.
A log is only as good as the parenting it records. The strongest entries describe ordinary care done consistently.
Keep the routine.
Stay involved at school. Pennsylvania attorney Louis Wm. Martini Jr. recommends asking for report cards yourself, because a school may not automatically send copies to both parents. It's a small step that shows real involvement without staging anything for court.
Be honest about substances. No source here supports the idea that any history of drinking or drug use automatically costs a parent custody. What matters is safety and the effect on your parenting. ADR Times advises acknowledging a substance problem and pursuing treatment or counseling rather than hiding it. Documented recovery is something you can show a court; concealment is not. Courts can also set conditions. North Carolina allows custody or visitation orders to require alcohol abstinence and approved continuous monitoring. Violating those conditions can lead to civil or criminal contempt.
The last mistake is the biggest version of the others: changing the child's life before the court has settled anything.
Moving and travel. Restrictions can apply while the case is pending, not just after a final order. Wisconsin's official divorce petition contains two separate prohibitions. Without consent or a court order, a parent may not:
When safety comes first. The Wisconsin form makes an exception to contempt if the court finds the action protected a parent or child from physical abuse and there was no reasonable chance to get permission first. North Carolina goes further. If you leave or relocate because of domestic violence, that can't be held against you in deciding custody or visitation. After a domestic violence finding, custody orders must protect both the children and the parent who experienced the violence. Texas attorneys Christina Jimenez and Joshua Floyd draw the key line: seeking protective court remedies is different from hiding a child on your own. Fearing for your life is different from using a child strategically.
Everyday "big" decisions. Collins gives school changes, braces and doctors as examples of decisions that may need to be made jointly. Cordell & Cordell flags removing a child from school or daycare and failing to give notice of travel. Bikel warns against impromptu vacations during the school year.
New partners. No source here establishes a nationwide rule against dating during a custody case. Ohio firm Gavvl says relationships generally matter when they affect the child, for example through neglect, exposure to fighting or unsafe people. Collins advises, as practical strategy, against introducing children to casual dates. Custody X Change suggests keeping new partners out of the court proceedings themselves.
Settlements. Negotiating is usually wise, but don't sign just to be done. Texas attorney Bryan Fagan warns against accepting an unfavorable settlement on the assumption that it can easily be changed later. Navigate Law Group warns against copying a friend's parenting schedule instead of building one around your own child.
Preparation matters more than polish. Modern Family Law's mediation checklist includes:
If you're representing yourself, Custody X Change advises reviewing your state's custody law and evidence rules along with your parenting plan and supporting evidence. Wisconsin's summons recommends an attorney but doesn't require one. Limited help is better than none.
Parents also worry about how they'll come across. On the r/Custody forum, parents give competing advice on suits versus business casual and worry about fit and cost. My view: dress neatly and comfortably. Your organized documents, truthful answers and conduct will say far more than your clothes.
Fathers often ask whether the system is stacked against them. Professionals disagree. Cordell & Cordell describes courts as biased against fathers. Navigate's Chelsie Elliott says that hasn't been her experience and emphasizes each parent's caregiving history. Whichever is closer to your court, a documented record of hands-on parenting helps.
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