Practice make Permanent.

You have all heard the saying "practice make perfect".
The other day, while practicing, me and a collegue was talking about what happens when you practice and I sad "practice make perfect" and he corrected me and said "practice make permanent".
That is so true.
What you practice over and over will inprint in your - whatever you are practicing - and that is not necessary perfect.
It's the same with your thoughts.
What you choose to think over and over again will reflect on your actions, your actions will reflect in what result you'll get. It might not be a pemanent result, but depending on your thougts, it might be perfect at that time.