Boredom and stress are definitely my triggers too! Boredom often translates into loneliness, and it's such a danger if you don't occupy yourself... My habits got even MORE hightened when I quit smoking and couldn't run away from my food cravings. LOL - THAT was really very interesting. I was so torn between two addictions and couldn't do either one.
Lol, but I feel all the better for it. I enjoy the outdoors more because I force myself to go for a walk (make any excuse - ohh I'm out of toilet roll!) and I go to the shops on a quest for the perfect, softest bog-roll! Or on a sunny day I'll happily take the bike out and ride to a park...
Since I'm unemployed at the moment, I do volunteering activities to keep myself busy as well... Maybe if weekends are really difficult for you, could have a go at working at a charity shop for a Saturday afternoon? It's actually quite a good laugh, the people that come through there are very interesting!
I inspired my manager at the charity shop I do work at to do Lighter Life! Haha, she seems very keen.