This memory just occurred to me, and still haunts me a little.
When I was in my mid-20s, back in the early 90s, I met Stu Phillips, who composed the original theme for the 1970s TV show Battlestar Galactica and also, I think, the theme for Quincy, ME, a 1980s show.
Stu Phillips listened to my music and told me I was basically a no-talent and should quit music and find something else to do.
This was terribly discouraging, and probably did contribute to my lifetime on-again, off-again relationship with music. I wish I had been more constant through the years, as I am now. But life happens. I can laugh about it now, but that still stings.