Although this probably doesn't work for some, when I'm feeling bottled up and stressed, I normally take the time at night to think about thoughts I close off. Sometimes I think about things I don't accept about myself, and then about if I can improve it or why I should accept it, like my facial features and why they're good for me. I often feel refreshed and more clear-minded. It doesn't have to be at night. Maybe a place where you feel comfortable?

I hope this helps at least a little bit.