This diagnosis is a reminder that this is the life you've got. And you're not getting another one. Whatever has happened, you have to take this life and treasure and protect it.
The only big ideas I've ever had came from daydreaming, but modern life keeps people from daydreaming. Every moment of the day your mind is being occupied, controlled by someone else - at school, at work, watching television. Getting away from all that is really important. You need to just kick back in a chair and let your mind daydream.