Life is too short to wake up with regrets. So love the people who treat you right, forget about the ones who don't and believe that everything happens for a reason. If you get a chance, take it. If it changes your life, let it. Nobody said that it will be easy, they just promised you it would be worth it.
You could live by these very words, and you will be happy. I've taken my chances and struggled the difficulties and yes it was all worth it!