I'm not trying to sound deep or corny or anything, but quite often people wish that things had happened differently. I'm not going to lie, sometimes I do too. But that actually just makes us more upset about the way things are. Wallowing in sorrow will do you no good. We should set our sights on something more productive and use our energy on that. 

"You have power over your mind-not outside events. Realize this, and you will find strength."-Marcus Aurelius