Check out this talk by Andrew Price Blender Conference 2016 about the habits of highly effective artists. You have to learn a lot, you have to be conscious of your problems, you even have to steal sometimes. Why? Here are some of the answers.
What separates successful CG artists from the amateurs? Discover the habits and practices of the top CG performers, and learn tricks and tips to improve your own work.
You can also find other inspirational talks from Blender conferences here.