I have started doing this too. These are more general than specific, but I think the biggest things for me are:
-Cleaning my entire apartment very thoroughly and keeping it that way. Makes me feel a lot better overall.
-Positive mental attitude always and trying not to stress about things as much. I am a very cynical person and I believe trying to think about things differently is important.
-Constantly analyzing what I am doing and thinking and asking people what I could have done differently, even if I don't see it as a failure there is always something to improve. The key is thinking objectively and not worrying about those mistakes, but keeping those things in mind in the future.
-Really pushing myself to do things out of my comfort zone every single day.
-Focus on making progress on something non-work related every single day.