I used to have a fair bit of imposter syndrome but now that I've been working with a proper team I've come too accept I have an aptitude for code and logic in general, alongside a fairly good abstract memory.

I'm not the best by any stretch of the imagination, but I'm a little more competent than the average software engineer, enough that it gets noticed.

I also got lucky and scored a job at 17 in the field (with no nepotism involved), not a great one but enough to look good on my resume, and have been working in the industry for just over a decade with no college.