You won't. A single bad harvest will wipe you out. And forget about raising a few animals, the vet bills will break you.
Sorry OP, I'm very good friends with a couple who are trying to live "The Good Life", and it's anything but.
They have about 10 biggish fields and a small patch of woodland, along with a few goats, a rescue dokey, chickens, geese and peacocks.
The chickens and geese have turned their once lush, green gardens into shit stained muddy bogs, it looks so awful, and the geese are really aggressive.
The donkey has cost a fortune in vet bills and hoof doctor call outs, I never knew a tiny little pebble, the size of a sunflower seed, could cripple an animal and destroy a hoof.
Their last bunch of carrots was taken out by carrot flies, whatever they are, and they lost a whole field of squash to some sort of worm or something, my friend texted me the pictures, they looked fine, but when she squeezed them they just burst with nothing inside. They refuse to use any pesticides because they want to be organic and sustainable.
If it wasn't for her parents constantly subbing them, they'd be using food banks.
To my uneducated eye, it seems that there's a limit to farming, and below a certain level you just can't survive.