Sure, they were simple desk lamps with only a minimal amount of movement, but you could immediately tell that Luxo Jr. was a baby, and that the big one was his mother. In that short little film, computer animation went from a novelty to a serious tool for filmmaking.
Nothing can substitute for just plain hard work. I had to put in the time to get back. And it was a grind. It meant training and sweating every day. But I was completely committed to working out to prove to myself that I still could do it.