I work at least 50 hours a week but because I am self employed my hours aren't very regular. There is no work schedule, I'm always on call. This is because I do tax consultations to help people pay estimate taxes every quarter and prepare everyone's 1040 (federal tax return) at the beginning of the year, piano tuning, irrigation, lumber work, give music lessons, and I do a variety of charity work.
I've never really had one "career" choice but my working career has been fulfilling thus far, I would really suggest learning how to do a variety of things without needing an employer for other people on the spectrum. Being self employed is more simple than you'd think, there are all kinds of things you can get certifications for now online and it is becoming easier and easier to market yourself online and through the phone book, newspaper ads, etc.
I would especially suggest that anyone on the spectrum struggling to be more financially independent should try preparing taxes. Everyone else felt bogged down by learning the tax system but I actually found it fun and when I do people's taxes it doesn't require much in the way of social skills at all aside from being patient with people who want to put something on their tax return that they can't.
Sometimes I just have to calmly tell someone that I can't include this or that person as a dependent or they or not eligible this tax credit, something is fishy with their W-2 form, or I don't even have to say anything I'll just take some notes and finish doing their return without sending it to the IRS. About as confrontational as you'd ever need to be is saying "well, I can't do that because I might have to pay a fine and the IRS will just send that form right back to you with a not so nice letter" and they go on their not so merry way.
Most of the time however I enjoy the job because people give me all these different receipts and forms and I just breeze through it. I get to take away their headache and all that stuff is simple as mud to me, just a bit of number crunching and remembering bits of tax code that I have on hand the whole time anyways if I need to refer back to something. This is why people keep coming back to me. Instead of preparing a return themselves and being frustrated to no end they can just hand me their stack of papers and watch me work my ASD magic. As long as you can remember enough tax code, are good with a calculator, and can ask a series of questions that you already know beforehand (and will probably ask tons of times before tax season is over) then you can prepare taxes.
And if you really like it you can try and find employment as a tax consultant during the rest of the year, primarily helping self employed people to pay their estimate taxes and just giving people advice about property taxes, ordinary and qualified dividends, capital gains, what they must do during the year to qualify for tax credits, what they need to do when they give to charity in order to deduct that amount from their taxable income, etc. It can also be pretty lucrative folks, and I can't remember the last time I had to stammer through an interview because I get to call my own shots.
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There is no wealth like knowledge, no poverty like ignorance.
Nahj ul-Balāgha by Ali bin Abu-Talib