The chief task in life is simply this: to identify and separate matters so that I can say clearly to myself which are externals not under my control, and which have to do with the choices I actually control. Where then do I look for good and evil? Not to uncontrollable externals, but within myself to the choices that are my own. (Epictetus, Discourses 2.5.4–5).

I always go back to this task: is this “bad” situation something that I can control? If not, let it go - it is neither good nor bad. If yes, then how? Do the “how”. The “how” may be specific actions or they may be about controlling how I perceive the situation. If I perceive the situation negatively, work out how to perceive the situation positively. eg. Losing a job may be viewed as bad because of money issues or career issues but could be viewed positively as an opportunity to pursue passions. Perceptions are controllable so bend them to positive constructive ends.