@DaveFlater @skeletor I think it would be best to be mindful of the source here. Inspirational Skeletor has a particular type of post they trend towards.
I would say they trend towards "It is tough, but I persist and emrace, and it is worth it". In other words - inspirational.
From that lense, I propose a meaning that is similar to what you suggested, but with less of a "You can't follow in other's footsteps" vibe, but more of a "Don't worry about getting it right" vibe.
There is no higher authority dictating how things must be done - only us with a sense of what must be done and a world in which what is done impacts people.