“It’s easy to attack and destroy an act of creation. It’s a lot more difficult to perform one.” – Chuck Palahniuk
And that’ why most critics won’t actually direct a movie or record an album; because talk is cheap. Finding the fault in someone else’s art is easier than creating your own and exposing it for everyone to see.
I have nothing else to add for the critics.
But for the creatives… Keep at it. Keep doing what you’re doing. Keep honing your craft and perfecting your skills. You won’t know if you’re good or bad until you try.
And you might fail, and fail again. You might do something good once, and then fail and fail again. Yet still you should keep trying; keep putting yourself out there. It takes guts to put your stuff out there.
If you’re good people will tell you and if you’re bad accept the reality and get better or move on.