Here are some rules and aphorisms I have learnt from others.

As you read, remember that Swami Vivekanada said, "You cannot become an astronomer simply by walking the streets saying, 'I am an astronomer'. You need to work at it". Or as my favorite Sanskrit aphorism goes "Deeds are accomplished by effort alone. Deer do not enter the mouth of the sleeping lion". So, just reading these rules will not help you. You have to live them. That is the hard part.

Finally, a piece of wisdom from Camus: "You cannot put off living until you are ready, life is fired at you from a point blank range."