I focus on the things I can change.

A locked door and a heavy door feel identical for the first few seconds, and most frustration comes from mistaking the second for the first. The heavy one moves if you lean on it long enough. The locked one takes everything you have and stays exactly where it was, and you walk away convinced the problem was your strength.

Worth sorting, then, before spending an afternoon on either. Not everything that resists you is fixed. Not everything fixed will admit it.