Go ahead, fail. Try to avoid mistakes, though.
Many Things That Are True Are True Because You Believe Them.
Habits are where our lives and careers and bodies are made.
Desire can't be sated, because if it is, the longing disappears and then we've failed, because desire is the state we seek.
Successful people fail often, and, worth noting, learn more from that failure than everyone else.
My blogging life is basically goalless. I like the zen nature of that, and paradoxically, it improves results.