How do I keep going as a caregiver when I'm running on empty?

You have cared for the dying and the dependent for years, and the pay never once matched the weight of it. That is a real injustice, and your tiredness is not weakness. It is what happens when a person pours out more than they are given back, for a long time. Say that to yourself plainly. You have earned the right to be tired. Running out of reserves is a warning, not a character flaw. You cannot give care you no longer have. The most important person you are neglecting right now may be you. That is not selfish. A caregiver who collapses helps no one. Refilling your own well is part of the work, not a betrayal of it. This week, take one hour that belongs only to you and guard it. Rest, quiet, something that is yours. It will not fix the wages or the years. But it is a start at treating yourself with the same care you have given everyone else.