Martyrdom see-saw
There's a specific flavor of fatigue I see in people who do it all. They absorb the extra project, cover for the colleague, stay late so nobody else has to. By absorbing every extra demand, the martyr quietly denies others the opportunity or agency to step up, effectively monopolizing the moral high ground. For the people benefiting from this dynamic, the arrangement is confusing. They are involved in a transactional relationship without any negotiation. The "martyr" is generous, indispensable, and always available, yet neither the martyr's needs nor the beneficiary's advantage is ever explicitly named. In the meantime, bitter resentment is brewing.
The martyr feels unseen, misunderstood, and taken for granted for all they've sacrificed. Their unspoken wish to earn significance without asking for anything is never met. Feeling powerless to truly stand up for themselves, they swing right back to carrying everything again in an incessant, frustrating loop.
The honest answer is uncomfortable because being a martyr is not necessarily selfless. It appears self-effacing but being the one who does it all is a form of currency. It buys significance, gratitude, and it sets you up for a problematic power dynamic with whoever is benefiting from your "sacrifices." Family systems research calls the resulting pattern over-functioning: doing for others what they could do for themselves. At some point the doing itself becomes the identity but never divorces from keeping track of how much you are putting in. Every sacrifice is recorded while to any observer, you are adamant you're not keeping score.
This is also why the see-saw never settles. Self-sacrifice and resentment are two ends of the same piece of splintered wood. As long as your self-worth is collateral in this barter, you keep swinging between giving too much and vilifying the people you are "serving." The middle ground is equal weight or, rather, effort on both sides. But if you've ever sat on a see-saw you know that never happens. Of course, none of our relationships are perfectly balanced but the mutuality comes from equal levels of commitment to a common objective, not an accounting of who is contributing exactly how much. But you can't build that kind of mutuality while the ledger is still open, because a running tally means you're always trying to collect what is owed to you in your relationships and coming up short.
What would happen if you gave up being the ultimate savior?