If it is a problem where you can change something, act.
If its a problem out of your control, at one time you must let go.
One way is to say it loudly (when by yourself otherwise people will think you are crazy) .
Something like that: okay life is not as i expected, my husband betrayed me, my car was stolen, my house burnt but i did my best and i will try to do better. Anyway I like myself.............