Do you think bad thoughts make you a bad person physicaly and mentally?

What are you trying to do, make up a designer religion? Everybody thinks their own thoughts and nobody gets to judge them unless you volunteer to discuss them with somebody. Your first level of security is yur choice of what thoughts to think, and some people need to work on self control to only think thoughts they consider profitable to you. Your second level of security is that you have to choose what to discuss with people and at the same time decide which people to share your thoughts with. So any way you look at it, it is a matter of your choice.