Something that makes me sad on occasion is how many great writers there are out there who don't make it. Not for lack of working hard to make a great product or lack of talent, but just because their story isn't right for the marketplace right now or whatever other silly reason.
I also don't believe anyone should ever think they are a bad writer. I used to be much worse at writing than I am now.
There's just always room to improve and grow and if something someone writes is considered bad, I think that just means they still have a lot of room to learn.
Studying writing has helped me tremendously. Maybe authors who are good at writing are just the ones who have been corrected the most.