Got an Answer?
Stop giving and start saying No.
Maybe you need to make yourself less available to others and focus on yourself and your family. Yes, be selfish. As crap as it sometimes is, you cannot force people to behave a certain way. Maybe if you expect nothing at all from your family you will save yourself a lot of disappointment, and the times they actually do consider you in any way you will be pleasantly surprised.
Practice saying no. Start out with little things. Turn your phone off at certain times, tell people you need a break. Learn not to feel guilty about giving yourself what you need before others. Once you master these few things saying no or telling people enough is much easier.