I feel a little silly admitting this (which itself is silly because I can understand how ridiculous it was, now that I'm older), but I remember when I was a kid

I feel a little silly admitting this (which itself is silly because I can understand how ridiculous it was, now that I'm older), but I remember when I was a kid and I used to innocently sing along whenever I felt like it. My sister was a fantastic singer; she was an opera trained soprano and, as kids, in comparison, I was nothing special. I think back to a time where my mom heard me singing, thought it was off-key, then mocked me by singing back what I had sung in an exaggerated tone. Mortified, I thought that maybe I just wasn't the one who had inherited the musical talent in the family. I realized that my mom's reaction was a shortcoming of her own and I as a 7 year old just happened to be in the way. As time went on, I realized I did have a passion for music; I started writing it, I studied it in college, I even started taking voice lessons. But I fell off when I started my career and have never picked it back up again. I imagine that, much like going to the gym (or getting a personal trainer), it's something you can make progress on at any age although as you get older, it can take different approaches to make progress. Is this correct?