"No one else can do what you do," is an oft used phrase to motivate and inspire people.
In other words, no one has the perspective you have. No one has lived the life you have. No one will express themselves in the way you do, and the fact that you have your own unique way of doing things is powerful.
If you were to write a song, no one would sing it in just the way you do. If you were to create a shirt, no one would design it in the exact same way as you. No one would teach, heal, or speak the same as you. You will have ideas and ways of executing them that will be entirely unique to you, and because you can put new things into the world, the world needs you!
Sounds great, right?
I guess so...
To be honest, for most of my life, this motivational message did not motivate me. It terrified me. It pushed on all my self-worth issues and made me not want to show up at all.