If you're ever going to be great at something, you have to be ready to look like an idiot.
You are putting yourself out there to be ridiculed. You are literally putting yourself out there to publicly fail. And that's scary.
But just know this: anyone who uses their days to try and tear down other people is doing that to hide their own fears.
We have a limited number of days on this earth. Do you want to get to the end and realize that you wasted yours trying to diminish what others are doing?
Or would you rather get to the end and be able to say that you gave something everything you had?
