USian Pie, I feel your pain. I picked up the guitar at a more advanced age (I was 44, and I'm 60 now). Initially, I only wanted to play certain things, so I learned only the chords I "needed." That has held me back more than I knew, but I am gradually moving forward. As with you, my time is limited, so I can't practice as much as I would like. With that said, even though I have no plans to become a great guitarist, I plan to just keep moving forward until the day this old dog shuffles off his mortal coil. I think of my improvement not as a race, but a marathon. I may not be as good as I want to be, but I am getting better than I was before.