OC is obsessive , compulsive right? First you are getting obsessed which somehow forcing you to perform those compulsive actions..If you want to get out of this thought, you need to stop making those compulsive actions. Cleanliness is good tho, but if you continue playing with water, you may have other skin diseases no! You can control everything. If your mind is coming with an statement, just find ways to counter it..

I tried but it's hard

Yes I can somehow relate as I have a relative who has the same habit.But family members are getting annoyed. To break all the habits at once is tough.You can try like , first select a particular habit like washing hands much or changing clothes more often..pick one habit first then try to break it.Keep on doing this unless all unnecessary habits are gone..This is the only thing I can suggest

Heyy.. i can somehow relate to ur prblm buddy... but i guess start with baby steps for eg. if u feel dirty ab ur body, then just wash it.. and resist frm changing clothes every now and then.. and afte u hv ur first bath of the day just tell urself tht u r completely neat and tidy now.. and just make a havit of bathing twice a day.. and restrict urself to this thing only.. ur mind will automatically adapt to it.. that after i bath twice i am already clean and nothing else is required