For those who aren't fortunate enough to have a loving and wonderful family and who have reached their limit with the piles of needless guilt and drama they provide, I offer another solution, or perspective, rather.
Trim the unhealthy branches from your family tree. That's right, trim those branches! Prune away at those connections which have served to do nothing more than tie you down, preventing you from becoming that happy, well-adjusted person you know you are. I'm not saying that this needs to be a permanent solution, in fact, I think you should always be open to reconnection - as long as it's a healthy connection. Healthy trees keep sprouting new twigs which eventually grow again into branches, afterall.
And no, I'm not trying to sound cynical either. I'm simply suggesting that it's okay to let go of unhealthy relationships. Taking time for yourself, time to heal, is paramount to maintaining your center as you walk through life.
Not all trees need to be like the willow, maple or oak, full with leaves, twigs and flowers to be beautiful. They can be clipped and molded by our will and intentions into a wonderful masterpiece, like the bonsai.