Self-care strategies for OCD will differ from person to person. It might be helpful to discuss potential strategies with your therapist.
Healthy lifestyle choices, such as eating a nutritious diet, getting enough sleep, and avoiding excessive caffeine and alcohol, might be helpful for you. These factors can all affect your overall mood and functioning.
Relaxing activities, such as mindfulness meditation and exercise, might also help. You might also benefit from engaging in creative hobbies, which can be a great way to process and express your emotions.
You could also try an OCD workbook, such as “Getting Over OCD: A 10-Step Workbook for Taking Back Your Life” or “The Mindfulness Workbook for OCD.”
Lastly, real event OCD often entails regret, shame, and guilt about the way you acted in a specific situation. Whether you were truly wrong or not, try to respond to those thoughts with compassion. All humans make mistakes, but nobody deserves to obsess over those mistakes to the point of dysfunction.
For more information on OCD treatment, take a look at this article.