I have a mild case of OCD when it comes to cleaning - everything has to be on its place and spotless. But it's obvious that I can't clean every day, besides I hate cleaning xD
So I try to do other things - go out with friends, read books, watch movies etc. It helps a lot.
There are medications which can be a great help in normalizing your brain chemistry.
Also, CBT works well:
Cognitive behavioral therapy (also known by its abbreviation, CBT) is a short-term, goal-oriented psychotherapy treatment that takes a hands-on, practical approach to problem-solving. Its goal is to change patterns of thinking or behavior that are behind people's difficulties, and so change the way they feel.
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