Whatever happens in your life, it's for the best. Never ever feel depressed thinking about something which never happened or something happened which should have not occurred in the first place. Because that means our destiny has something else in store for us. Who knows, that might be something which makes us the happiest person.
There is no point on weeping over the things you lost or did not happen. You have to think it's for the best and move on in life. Find something new which makes you happy and keeps you occupied so that your mind does not wander back.
As the quote says "When life gives you a hundred reasons to cry, show life that you have thousand reasons to smile"
Until next time!