Don't Do Anything About Your Feelings
Yup, that's right. That's the trick.
When you feel like shit, don't do anything about it. Just sit quietly with your feeling of shittiness. Let it be. If you don't freak out about it, fight it, or impulsively try to change it, it will move right through you. In fact, as soon as you resist the urge to fight, change or make war with how you feel, you will have already begun to feel differently. Our feelings will constantly change and morph from one thing to another, and we can aid that process by not going to pieces just because we feel bad.
That is a recovery gem for addicts, and perhaps for people in general.
Needless to say, it's also okay to address our feelings positively. If I'm feeling stressed and I go to the gym to run and lift weights for an hour, that is a productive use of time and may help to shift my feeling of stress. The point is not to approach our awful feelings negatively, as that will simply compound the shitty way we feel.
God, please help me to stop resisting so that my feelings may freely move through me...