I'm on disability in the highest unemployment area of the most unemployed state in Australia. I don't have a trade. I spend a lot of time thinking about this.
My conclusion is that there are two options that could result in long term work that doesn't suck. Both are based on improving my situation.
* Train in an area of skills shortage via a recognised course.
* Train in an area that interests you, not via a recognised course.
The first speaks for itself. Your location finds it difficult to attract people with particular skills or trade, then you turn up with a piece of parchment that says you are the answer to their dreams and their problems.
The second is similar, but targets those subjects that don't require such an impressive document as required by solution number one. Like flowers? Libraries and op-shops have more books on flower arranging than a church has bibles. Set yourself the task of reading nothing but flower arranging books for a couple of months. Get some oasis, a few flowers, ask the ladies at that church who do the flowers if you can have any spare shaping wire and help out doing the flowers. Is that enough to become a florist? Don't know. Probably not. But if you were to try to convince a florist to give you a trial or apprenticeship...
Cocktails? Plenty of books on the subject. Memorise a few hundred recipes, demonstrate a knowledge of bar procedures, even if only in theory. All available in books.
Gardening, horticulture, carpentry, cake decorating, languages...
Time flows in one direction. In five years time, you will be five years older, not five years younger (sorry). So set yourself some goals. Choose a subject and choose a time. The aim is not to be a master craftsperson in a year. The aim is to convince a prospective employer. That's all. Convince.
Address the inevitable question of your time on disability. Why it doesn't mean you're unemployable.
They'll get lots of applicants. You need to shine. Not impossible. A lot who turn up just want to do anything, and as such, don't have a clue about what they're applying for. But you can build a reputation in your area. You can demonstrate interest.
Just wish I'd listen to my own waffle 
_________________
assumption makes an 'ass' out of 'u' and 'mption'.