My family was very supportive of my acting. They didn't really have a choice because I got jobs acting before anyone could really say anything. It paid my way through college and helped my family out.
Part of the work is determining through what instrument you are playing. Actors are physical, olympian storytellers and we should be able to create entire landscapes with nothing.
We make a contract within ourselves as actors or directors or writers about how much of ourselves we let into projects. You can actually figure out before you work on something how much blood you will have to let emotionally.