Mastery and slavery is a calling. A personal calling to walk an edge within themselves and the ones who choose walk that edge with them.
Yes, you can start out by just saying “I want to be M/s. I have no idea what that means, but I know where to begin.”
One does not earn a black belt by waiting 5 years, jumping onto the mat and performing perfect katas. One earns by putting on the white belt and getting the crap knocked out of them, by the frustration of learning, because it’s the journey that leads to the Master and slave, not the destination of having arrived.