I always feel this way. However, I try not to let it get to me since I do what I want. It makes me happy and helps past time, alleviate boredom and gives me a sense of being productive. While I do not like my skill level, hoping it was better... I always look forward to trying to improve anyway. Also, these are gifts, better make the most of it, right?

I remember a friend once tell me, I should be grateful of whatever I am capable with. While its true you can learn any skill you like, there are some who are just naturally adept than others. Some don't also have the time, patience or calling for such skills so for those who do, be thankful. Always be thankful. At that time, I was lamenting over how I could never finish any piece and when I did, it paled in comparison to so many artists I was then watching on art websites. :c It was one of those times, I actually felt consumed by envy... Happens to the best of us.