Establish clear priorities and values so you can select opportunities and challenges wisely in a world of overchoice. Know what is important and unimportant, desirable and undesirable for you. If you don't, you run the risk of being overwhelmed by options and of having decisions made for you by others. Clear values can provide guidelines for specific decisions. Select activities and challenges that are meaningful to you and avoid meaningless ones whenever possible.
Proper pacing is vital in daily life, just as in running a marathon.
So is choosing activities and goals that are meaningful. Sometimes, of course, you must do things that have little meaning or make little sense to you. But when you can exercise choice, spend your time on challenges and activities that are meaningful to you. Develop sensitivity to your talents, deep interests, and personal preferences. Become good at the things you enjoy.