There are no mistakes. The events we bring upon ourselves, no matter how unpleasant, are necessary in order to learn what we need to learn; whatever steps we take, they're necessary to reach the places we've chosen to go.
Your only obligation in any lifetime is to be true to yourself. Being true to anyone else or anything else is not only impossible, but that mark of a fake messiah.
The bond that links your true family is not one of blood, but of respect and joy in each other's life. Rarely do members of one family grow up under the same roof.
Don't be dismayed at good-byes. A farewell is necessary before you can meet again. And meeting again, after moments or lifetimes, is certain for those who are friends.
You are never given a wish without also being given the power to make it come true. You may have to work for it, however.