The trick is to stop worrying about the future, which is so full of unknowns.
Be the best person you can be right now, today, this hour, this minute. If you do that—if you succeed at that only some of the time—you will find yourself equipped to deal with whatever life brings you, and to create the future you have imagined when the opportunities arise.
At certain moments, however, “being the best person you can be” means being someone who is exhausted, run down, discouraged, out of ideas, completely lacking enthusiasm or inspiration.
At such moments, you need to stop and take care of yourself.