Success (be it freelance work, entrepreneurship, or what have you) is not about skill.
It’s not about talent, and it’s not about luck.
I’ve noticed over the years that the most critical tool in the arsenal of effective humans is a winning mindset. It might manifest itself in the form of quiet confidence, and on the other extreme, it might be overconfident delusion.
Regardless of what it looks like, it’s critical. I meet few people who are (truly) surprised that they saw success in a venture that they undertook.