Can you do me a favor? If not for yourself simply do it for a random guy on the internet. Can you walk at least 15 minutes a day if you are not already? Work up to 1 hour a day. It's fine if you walk slowly. You don't have to run. You don't have to do push ups. Just walk. You'll feel better about everything in about a week.

I walk everyday. I prefer a pair of 1461 Doc Martin over my $170 Asics.