When I was at school (a long time ago) I was told that I was no good at art and I believed it for years. After a period when I realised that I was very depressed I attended an art class at Mind (a charity for people with mental health difficulties). I began to understand that for me creating art allowed me to be in the moment and it was the process not the product that was important.
In the years following this experience I have continued to paint and draw and never to worry what others think of my efforts, because I have already reaped the benefits by the creative process.