Hi @the-gorilla, thanks for reading my post and for your kind comment!
One thing that motivates me to keep working on art is its difficulty and that there is always something new to learn and do better.
Dalí said: "don't be afraid to look for perfection, you will never find it"
Fortunately, I can sense when the criticism is well-intentioned or comes from a feeling of envy. This feeling is very strong and common among people in the field of art, perhaps because some people cannot overcome their own abilities or limitations.
Greetings!