People who are successful in their careers are generally full of energy.

If you stick to these principles, you can also be energetic and excellent:

Control your mouth, control your private urges, and get a good night's sleep;
Only eat what's in your bowl, only drink the water at hand, only do the task in front of you, only look at the person before you, and temporarily forget about "time" in your mind;
Always be able to step back and view things as an outsider. Once you have this perspective, no worries or awkwardness will ever touch you.