Don't work for fools. It's not worth it. Getting paid less to work for people you like and believe in is much better for you (and your career) in the long run.
Cultivate the habit of being grateful for every good thing that comes to you, and to give thanks continuously. And because all things have contributed to your advancement, you should include all things in your gratitude.
One can be deceived by three types of laziness: of indolence, which is the wish to procrastinate; the laziness of inferiority, which is doubting your capabilities; and the laziness that is attachment to negative actions, or putting great effort into non-virtue.