Thats a pretty hard one Lucky, I mean most people are just gonna go and say the obvious thing "smoke weed" but sometimes its just not as simple at that. Of course we're all going to go through those times in our life where we feel like absolutely nothing is going our way im sure 'everyone' has been there, so I can relate to it I know exactly how you feel mate, Do you have no ambition as of lately because you've just thought "fuck it" or because you just simply dont want to have any? What do you think that the main reason you've been getting stressed is?

The mind is a powerful thing and I dont think its and sort of drugs or vitamins that you need to help you deal with your stress, I think you just need to re-think how you feel about the situation you are in, obviously at the moment you cant get any weed at all so maybe try to keep yourself busy and active, work-out, keep yourself busy with work etc and just spend your time doing the stuff you enjoy, but what is the main reason that you are stressed out do you know? because I know that sometimes you can just get stressed out for no reason at all.