Authors:

Don't worry about making mistakes. In fact, the more mistakes you make, the more progress you are making. Just don't repeat the same mistakes.

Mike Michalowicz (2008). “The Toilet Paper Entrepreneur: The Tell-it-like-it-is Guide to Cleaning Up in Business, Even If You are at the End of Your Roll”, p.112, Toilet Paper Entrepreneur
Don't worry about making mistakes. In fact, the more mistakes you make, the more progress you are making. Just don't repeat the same mistakes.