I am 24 year old male, I have minor habits of OCD since I was a child and I wash hands 10 times a day and check locks more than one time and a couple of times I was worried about any infection in my entire life and it then it goes away and I feel completely fine. But 2 months back I started reading a book called" POWER OF YOUR SUBCONSCIOUS MIND" it is a book about" whatever you think becomes the reality" and.After reading the first few pages my brain started fighting against me and gives me a thought that I have cancer or something. I tried to ignore, fight and keep my self calm but nothing worked so researched about it and m here. I just have a stuck thought which is not going away. I do not have any fear or any belief that something will happen. But it is just a thought which keeps clicking inmy mind and does not goes away. I need help on this stuck thought in my brain .Any help will be appreciated. (Preferably homeopathic).