A locked heart is a problem. Not too sure I have anything more to say about that. Pain is an inevitable part of life. If you are alive, you will get hurt. And if you keep your heart all locked up to "protect" it from being hurt, the next thing you know, it is ruined from being locked up all the time.
I've been sketching a bit. I am not the greatest at doing it but it's enjoyable to me. I usually go into Flickr and choose some poor unsuspecting subject there to sketch. It never ends up looking exactly right but that is okay too.