Your limits, cool-offs and self-exclusion are set in the Nita app, under Settings → Responsible play. They apply to your account everywhere, immediately. Lowering a limit takes effect at once, and a cool-off or self-exclusion cannot be cancelled early.
If play has stopped feeling like a choice, the National Problem Gambling Helpline is free, confidential and open 24/7. Call or text 1-800-MY-RESET (1-800-697-3738), or chat at 1800myreset.org. The older number 1-800-522-4700 reaches the same helpline.
In Texas, the Texas Coalition on Problem Gambling is the National Council on Problem Gambling's state affiliate: 713-364-4557. Texas Health and Human Services gambling services are reached through 2-1-1 Texas: dial 2-1-1, choose your language, then Option 5.