you need to learn to relax, if you live in a shitty area with no trees find a nice park with trees maybe a lake or stream , go there just go for a walk, dont need flash runner's pants and stuff, just ordinary comfortable clothes and go for a walk and you dont need to walk fast just a 1/2 hour walk then have rest on a bench chair (maybe watch ducks? )sit there for long as you want 15 -20 mins? then walk back to the park entry back you came from then go home. Easy!!
this is like a mini-holiday plus walking excercise without sweat or huffing and puffing the idea just walk to relax!
You should try, it help body and help your mind to relax. I do this every day with my dogs semtimes long walks other times short but it works everytime.
It a very good way to learn how to relax!