Or another way of looking at this is the following. If you take on new, large projects, you're often worried about the problems you face, how things are going to work, if your skills, effort and knowledge are enough. More often than not, you will end up with something reasonable upon completion (if you have enough self-control to get that far) and even if you fail miserably, you learned valuable lessons. So it is not a bad thing to confidently step into new directions, even if there's a risk or certainty that it won't be better than bad.
Example: I never baked a cake (ok that's not a large project ;p). I will bake a cake. I know it is most likely not going to turn out well. The result of my work might even be garbage that I have to dispose of. I will bake a bad cake. But the next cake will be better, I learned something from my mistakes.
If you're baking a cake, and have never done so before, you don't wade in and try to make the multi-layer chocolate scratch cake with ganache first.
You buy the box of Pillsbury Funfetti mix[1], measure out the cup of oil and crack two eggs in and mix it up and pour it into a 13x9 pan. Bake it up and throw some canned frosting on top.
Is this going to be the greatest cake in the world, no; it's ceiling is maybe 80% (or maybe higher, depending on how nostalgic you are for Funfetti). But it's hard to really screw it up.
Example: I never baked a cake (ok that's not a large project ;p). I will bake a cake. I know it is most likely not going to turn out well. The result of my work might even be garbage that I have to dispose of. I will bake a bad cake. But the next cake will be better, I learned something from my mistakes.