Don't cry over spilled milk

When life does not turn out the way you expect it to, you have two choices.  You can cry about it, or grow from it.  The choice is yours.  You can be a victim of circumstance or master of your own fate.  Everybody suffers in one way or another, but it is not whether or not we have suffered, rather what we do with our suffering.  So, "When life gives you lemons, make lemonade".  In other words, turn life’s challenges and adversity into learning experiences that will help you succeed.