What was your programming level when you left the job and started working on these projects?

I view myself as probably a 4/10 at this point, really never having built a super complex application from start to finish. And that's the fear holding me back. However I feel it would light a big fire under me to improve in a lot of ways, be super efficient with my time, study hard and put it into practice. Any advice about this "imposter syndrome" feeling would be appreciated.