This goes for children as well as adults...Choose Carefully.
In the end, only three things matter: how much you loved, how gently you lived, and how gracefully you let go of things not meant for you.
Hence why change is usually so hard for all us, especially in relationships. We remember the beginnning, the good times, the great times and that's what we fear we'll never happen again. It's why people sadly stay so long in bad relationships. So in 2013 just let go, don't be afraid, take risks and you'll be amazed what happens in your life. :D
You'll drive yourself crazy trying to understand things that aren't meant to be understood. Sometimes you just need to accept and move on.