The worst life is to wake up and have nothing you want to do. The best life is not being able to stop yourself from launching out of bed, working on … - Dan Koe

It takes practice, but you can train your mind to flip into a good mood in an instant by realizing that most of your bad moods come from holding onto things that don't matter and can't be changed. You can choose to frame your situation in a way that leads to more happiness.

If you have multiple interests, don't let anyone convince you that you should narrow your focus. You may be confused for a while, but if you stick it out, you will blow past everyone else.

You don't need to focus harder. Focus is the byproduct of a lack of distractions. You simply need to be in the right environment (mentally and physically) and have a clear set of tasks that you have the knowledge and skill to execute. Ignore everything but that.