Read about HSP, turns out I could be considered one, who knew. I never let that stop me, I'm self employed because I don't like the stresses of someone else's expectations on me, and that I can chose the work I do. I do mostly garden work, weeded, making, redoing, planting, trimming, no lawn mowing because of bad shoulder I can't handle the feeling. I also do odd work with small livestock, locals call me when an animal is sick if they can't have a real vet out because of expense or know I can deal with it just as well.
I pick the work I do on where and when I do it. Not minding working early mornings let me be alone, rarely if ever do I have anyone around when I go and weed for a a couple hours. Noise is minimal, work comes in from word of mouth as quick as I can do it. I know in Canada the way I run I don't need to worry about special taxes, or anything like licenses, because I run under my name, make under $30000 a year, and sole proprietor. For tax I just claim it as personal income, keeps things easy when I write and keep receipts.
Good luck with the business, it doesn't hurt to try different kinds and ideas, I've found I am good at marketing, but terrible at the product side, that is why I don't sell anything but a service.