What is that one simple change in your life that gave great results?

Writing everything down and keeping my head empty of worries / things to do. Thus letting me use my head to only solve problems at hand and enjoying life. Also known as GTD methodology.

Applying radical honesty in every area of my life. From business, to relationships, to friendships.

It takes years to be able to do it while working through all your bullshit and I'm still not perfect at it but then it saves so much time and you get what you actually want in life.

I discovered that doing the work of love makes me happy, so I began to spend my time in unselfish service, and became both happy and beautiful according to the goodness of my work.