I enjoyed myself doing that drawing. Success was about my enjoyment in the process, and satisfaction with the end result, however much the perspective was all over the place. It was absolutely nothing to do with whether anyone would give me some money for it.
Thousands of art classes take place every day and while a few of the artists may be wistfully thinking of selling their work for ££££, I bet most of them are just pleased to be spending time being creative. Why should writing be any different? Why does market place success matter so much to writers? Isn't it enough to enjoy the process?
I don't think using market place success is the right way to judge the success of your writing. What makes a published writer is a combination of many elements - determination, persistence, talent, luck, skill, hard work, imagination - but all published writers have one thing in common: they're writing what they believe in, not what they think will sell.
Sometimes, publication is a question of being lucky in writing the right thing for that particular moment. After the success of Twilight, there was a rash of young adult novels covering similar ground, currently dystopian novels are top of the YA best seller lists with The Hunger Games. But the market has already moved on. At Bologna - the international children's book publishing fair - last month, apparently no one was buying dystopia; instead they wanted adventure stories.
Enjoy the writing, and write from the heart. So long as you're writing what you really believe in and are enjoying the process (difficult and heartbreaking as it can be), you're a success.