You can simply “do the thing”.
Maybe I speak for myself only here, but I have often fallen into the assumption that you should stay on the path you’re on. The sunk cost fallacy is a hell of a judge, as are your friends and family.
This is a rope to help you out of the pit. There are no hard-set rules for how to live. There is no certainty in this world. There is no path but the one you forge. We live one life; let’s make what we want of it.
If there’s something calling your name, have a go. Within the laws of physics, anything is possible. If not now, when?