No one has 100% agency, you don't always have a rudder, sometimes the wind capsizes your boat and you drown to death. Sometimes you had to compromise so much that the end result doesn't satisfy you. That's what a midlife crisis is after all. A lot of people did their best, and are still unhappy with the outcome because luck plays a huge role in life.

Some people don't even get boats my friend, they have to try and succeed on a plank of driftwood. I hope you don't have a midlife crisis either, but chances are pretty high your not going to end up exactly where you thought you would be, and hey maybe that ends up being a good thing. Maybe your horizon was okay but you actually lucked into something you loved more.