Hey there, it's simple - WORK! It seems to be a little known fact that Cornwall is one of the most deprived areas in the UK, it even gets (for the moment) Objective One funding from the EU - there is very little work available that isn't in the care or tourist industry...or shift work in shops. Anyone not on benefit is likely to have at least two jobs, and even then is probably getting some kind of help.
I love Cornwall, but I've spent most of the last ten years getting qualified as a horticultural scientist and realised very quickly that I would have to move in order to find work in that field (no pun intended). I was lucky and privileged to get a job with a commercial nursery in the area. Herefordshire is alive compared to Cornwall, it feels hopeful and able, whereas Cornwall feels resigned and worn down, even my partner, who is Cornish born and bred (and proud of it) and a little...miffed, shall we say...at having to live in England (never, I repeat NEVER tell a Cornish person that they live in England! Especially not in a Cornish pub after a few drinks) but even he loves it here...plus, the light's beautiful (he's a landscape photographer) and there are so many national parks and areas of outstanding national beauty around.