regret not slowing down to take pictures
I think that right there is the key. Since photography is just something I do on the side, I don’t always have tons of time to take pictures so I rush my way through things, and then afterwards there are little details that I could’ve removed from the scene to make it less cluttered or extra pictures I could’ve taken of the scenery, etc., but I didn’t do those things because I didn’t take the time, and I end up regretting it later.