I am in my 5th year of 'studying' the 12 steps.
I have found that when I encounter a sitution where I am becoming angry, frustrated, or 'out of sorts', if I recite the 12 steps in my mind the situation and my bad mood almost always disappears.
I started off by just reciting the first 3 steps when I began to sense a negative situation or a bad mood coming. Now I recite them all.
Amazing.
Especially amazing for someone like me who thought I knew everything there was to know about the 12 steps (foolish me

).