Don’t start with their “how”; start with your “why.”
Define the reasons why you do what you do before you listen to anyone’s version of “The 5 things you should or shouldn’t do.”
Your goals, your priorities, your definition of success, and your concept of happiness sets the context for what is and isn’t relevant to your life.
Everything is wrong and everything is right depending on the context and the individual.
Nothing is absolute in the realm of advice.
If you’re looking for a fool-proof approach to self-help, there isn’t one. Every good piece of advice that has ever been given is fully capable of making your life worse if you aren’t careful, conscious, and creative in your personal application of it.