I'm all out of me

For the past few weeks, I feel like I've worn myself thin between different people. Like there is no more myself to give. I'm all out of me. And I've come to realize It's not me who's lacking with emotional output - it's the excessive emotional dependencies of other people that are draining me. And I don't know what the best course of action is. Obviously, those people need me, but a complete lack of boundaries on all of their part makes them feel entitled to subjugate me to each of their emotional whims.