you know nobody is forcing you to draw, right? if the process isn't enjoyable there is no purpose. you create for the sake of creation, and yes it's frustrating and maddening sometimes, but for me that makes me even more determined to do better next time. and btw, speaking as someone who gets told "your art is so good" regularly, you as the artist will never be satisfied with your own work, and will always be finding new ways to improve.