its a good attitude to take, but please dont beat yourself up if it doesnt work. sometimes you just have to BE with the sadness until it works its way through. but the idea of doing good to feel good will give you moments of happiness in those dark times. i lived in the dark for a long time and thought there was no way out, but there was this little bit of me that clung to hope and finally after the right meds and therapy, the depression lifted and i havent gone back. so hang in there with that positive attitude.