Thinking on the root cause and then finding a solution. Personally, I just tend to overthink, rethink and then overthink some more.(Literally OCD thought process.lol) One thing that's helped me is this, don't stress over what you can't fix immediately. In other words, if there's not an immediate solution or maybe even no solution or it can wait, chill for a minute and relax your mind so you can think clearly. Emotions cloud judgement, lead to knee jerk reactions and often times when we think we need to worry, maybe what we need to do is just relax and think. I'd avoid the above mentioned alcohol, since that literally stresses your body out more(Don't worry, I too enjoy. So, I'm not on some moral high horse here.lol).