Your aunt started piano at fifty-two. The only deadline on learning is the one you invent.

Deadlines on learning are almost entirely imported. School arranges everything by age, and people carry that arrangement long after leaving, quietly believing there was a window for beginning things and that it has closed. No such rule exists outside the building. There is only how much time you are prepared to give something.

Work out what you have been counting yourself out of, and notice whether the reason is a real obstacle or just a number. Start badly this month, in private if that helps. Late beginnings tend to move faster anyway, because you know why you are there.