Ok so I recently got my learners permit for a motorbike because I love it, for one, but also because I am thinking about becoming a postie (mailman if you don't use that abbreviation).

Ok the problem is, I have had one job before, working at a supermarket for about 4-6 months or something. I'm guessing that would look shit on a resume especially since it was in 2006 or something lol

So the application asks me "If you have never worked before please provide the reason why here"

What the hell do I say?

I have anxiety problems and couldn't handle the stress of working while going to uni at the same time? Would that be bad?

I want this job because you start early and finish fairly early. Which suits me because I want to become a freelance illustrator, so with this job I'd have time to work on illustration while also earning a steady income.
So any help is greatly appreciated.

I really just don't know what to say without it sounding like I'm lazy or something.