Who supports me when everyone leans on me?

You have become the person who steadies everyone else. Managers bring you their doubts, and you carry them well. But being the strong one for so long has a quiet cost: you forgot to ask who holds you. That is not a flaw in you. It is what happens when you are good at this. Strength that never rests is not strength; it is a slow leak. Even the person who props others up needs a wall at their own back. You are allowed to be someone who needs. Admitting it does not undo the good you do for others. Find one person who does not report to you and does not need anything from you. A peer, a mentor, an old friend. Tell them one true thing you are carrying. You do not have to fix it in that conversation. You only have to stop carrying it alone.