I started studying the guitar at 16, and looking back now at 55 years old, I wonder if going in a different direction would have resulted in a dramatic difference. I know that really learning to sing would have made a tremendous difference, and my decision to pretty much abandon electric guitar playing at about 35 took me in a completely different direction. I walked away from an established place in my scene and entered a completely different one, which led to gigs and experiences I never would have had at the expense of other gigs I would have surely landed. I'm really not sure if it was the right move, but it's the one I made.
I know no one can really know what would have happened, but I'm wondering if you all have similar questions about the direction you took in your musical pursuits. I remember reading an interview with EVH, and he said if he did a solo album it would sound exactly like a Van Halen album because the group was doing exactly what he wanted to do. While I'm sure his success helped solidify his feelings, I envied his focus because I've never really had that kind of 100% certainty of what to do musically.