i had this tendency too i just kept washing my hands with soap whenever i thought the washing was donethe feeling that my hands could still be contaminated germs just took over my brain and the cycle goes on but with the time the feeling went away i was a child then didnt know that it was an actual problem my family didnt know much and gave it name of just an habit but i knew it wasnt an habit but more of a compulsion to do it happy that it was over before i learnt it was an ocd