The thing about stuff like this is that you often need to consider the scale at which you assess yourself.

If you compare yourself to the most prolific person in the field, you're going to fall short, but you might find that the level at which you apply yourself to a creative endeavor matches the value you place on it. I'm not willing to sacrifice my day job for game stuff, so I have to accept that I'm going to see results in line with what I can invest.