The thing which you have to do everyday. Workout and then doing things which makes you excited and happy for doing what you are working on. The key is to include the thing which you want to work on or want to master, in your day to day life.
Elon Musk does it nicely. He sees the world according to his vision and let the people come to his world. What is your vision? Allow people to come in your reality and then work will no longer be work but a fun process.