I once felt this way. Exactly, I picked a school, started on my GRE’s and did them every day, every minute, completely obsessively. It worked. At this time, if you don’t have children and you want to go abroad to teach. Focus, make it happen, study, apply, get your certificate. It’s okay to be in your head. It’s okay to be just for you. Learn to skate, study, go fishin, what ever floats your boat, just manifest your energy to where you want to be. Good Luck.