"Listen to your intuition. If you can't hear it or don't know how to listen, teach yourself. Stay away from gurus or personality cults.
Once you hear it regularly, follow it.
Always evaluate your progress between today and yesterday, never between today and where you want to be. If you've grown since yesterday, no matter how miniscule the amount may seem, you are succeeding. Any appearances to the contrary are illusions.
Be good to people. Do your best to love them; you are literally them. For that matter, love the earth, love animals. It's all the same organism.
That said, you're always going to have dickheads around. It's good to know how to avoid them or deal with them. Learn those skills, too.
In short: listen to the voice of your intuition (truth) and own it.
P.S. - buy a copy of Meditations by Marcus Aurelius."