Ann, When ever I'm concerned with being "too" grown up I head for DisneyWorld.
Something about a 57 year old man with a "Goofy Hat" prevents me from taking myself too serious. And you are correct about unlearning poor behavior. I atribute some of it on poor paradigms( models) we were supplied with, even sometimees not supplied with.
Today I saw them playing outside on the rocks. He's starting to get around more. I also noticed Mom running in the direction that he'd have to take a difficult route to follow.