Bodyweight fitness. You are your own gym! Don't spend the money on a gym membership until you have it. Another couple things I'd add to what others have said:

Bodyweight fitness. You are your own gym! Don't spend the money on a gym membership until you have it. Another couple things I'd add to what others have said: Get enough GOOD sleep. Read. It will help you both with focus, and give your mind a break from the things that are heavy on your heart.