The simplest way to do the right thing
Is to not need to want to do the right thing.
It is totally possible and absolutely essential to be able to do your personal best even when your mind doesn’t want to. Integrity lives in action, and you have the power to choose correct action, no matter what you’re thinking mind has to say about the matter.
The way to become your future self that you are proud of, which is the ultimate reward, is to let your personal integrity lead you.