This document outlines the lessons learned by the founder of Grabcad over several years starting their company: [1] Don't give up after initial failures and celebrate small victories. [2] Getting customer feedback is important for product development. [3] Surrounding yourself with supportive people like an understanding spouse is crucial for entrepreneurship. [4] Experimentation and learning from others are key parts of the innovation process. The most important lessons are building the right team of people wanting to learn and develop together.