Twenty-two affirmations for racing thoughts — for a mind going too fast at 2am or in the middle of an ordinary Tuesday.

Racing thoughts are not really a thinking problem. Nothing gets solved at that speed. It is closer to a stuck accelerator: the same three worries cycling faster and faster, each one too quick to finish.
These twenty-two affirmations are brakes. Several of them work by putting distance between you and the thought rather than by arguing with it, which is the part most people skip.
The single most useful line here is that thoughts are not facts. A racing mind produces sentences at speed and none of them arrive labelled true or false; treating them as reports rather than as verdicts takes most of the urgency out.
Then give the mind something slower to do. Name twenty-two things you can see, or repeat one line on a long exhale. Racing thoughts subside far more reliably when attention is occupied than when it is told to stop.

1. “I release thoughts that aren't related to the present moment.”

2. “I think peaceful thoughts and enjoy peace in my life.”

3. “I keep my focus on authentic, realistic, positive thoughts.”

4. “My thoughts are not facts, and I do not have to believe every one of them.”

5. “I detach from thoughts that do not serve me.”

6. “I release tension and focus on positive thoughts.”

7. “I control my thoughts and today, my thoughts are free, happy, and positive.”

8. “I let go of my anxious thoughts and think of positive ones.”

9. “I am relaxing by letting go of my anxious thoughts.”

10. “I teach my mind to focus on happy and calm thoughts.”

11. “I pause my whirling thoughts and replace them with calm ones.”

12. “I choose positive thoughts for the sake of my inner peace.”

13. “I focus only on happy and peaceful thoughts that raise my vibration.”

14. “I am able to switch from stressful thoughts to peaceful thoughts.”

15. “I refuse to let my thoughts overwhelm me.”

16. “I am able to choose more productive thoughts than worrying.”

17. “I make time to sit with my thoughts and feel my emotions.”

18. “I calm my mind and my thoughts whenever I want.”

19. “I think calming thoughts that attract serenity into my life.”

20. “I am in control of my thoughts and feelings.”

21. “When anxious thoughts come to me, I acknowledge them, then let them float on by.”

22. “I hold an umbrella of positivity to shield me from storms of negative thoughts.”
Do not try to stop them lying still in the dark — that reliably makes it worse. Write the loop down, then use one line on a long exhale. If twenty minutes pass with nothing changing, get up briefly and read something dull.
They are a common feature of it, and also of stress, caffeine, and not enough sleep. Persistent racing thoughts alongside sleeplessness and elevated mood are worth mentioning to a doctor rather than self-managing.
Almost never. Suppression tends to increase the frequency of a thought. Acknowledging and returning attention elsewhere works better than argument.
"My thoughts are not facts, and I do not have to believe every one of them." It is the one that changes your relationship to the whole category rather than to a single worry.