Breaking excessive thinking is easy, people think that it is a really hard thing to do and it is like the core step to enlightenment but that is not true. Just be aware of it, you do not have to engage with those thoughts also thinking is not just a bad thing, the mind is a tool and when used correctly there are no limits. Instead of being at war with yourself be at one with yourself, the mind is not separate, it is one. Just enjoy your life. If you have a problem solve it, if there is no solution then it is not a problem. People are always looking for some complicated philosophy but the truth is all the answers you need you already have, you are already enlightened, you are already god. Just get out of your comfort zones and live.