When life simply isn't going your way, the quick reactions are the ones we often regret. Remembering the acronym STOP curbs reactivity and keeps you in control.
More than simply taking a deep breath, this tip is about creating a mindful mentality when dealing with any problem you face. (S)top when you realise you're about to get hijacked by your reaction, (T)ake a breath, (O)bserve what is going on in your body and not just your head, and finally (P)roceed once you've done all this.
Using STOP prevents you from saying or doing something you'll regret later and takes less than a minute.
Caught in Reactivity? How the Acronym STOP Can Help You Find Calm [zen psychiatry]