Art is best done all in, as if everything is on the line. When the little hairs on the back of your neck stand up, you know you've commited to whatever it is you make.
Marketing strategy and communication, on the other hand, is best done with discernment, a strategic game to be understood and tested. The more you need to (must!) succeed at bringing the idea to market, the less success you'll encounter, because your fear will come through.
Patience, awareness and skill matter, and you are best at this if you are prepared to fail without dying.
So, go do your art and make a difference. But don't expect to be good at marketing if you have only this one and only moment to do it.