Ahh! Now I'm beginning to understand. With that in mind, some thoughts:
1) Forget about the lathe for now. If you're not eating right you can't afford it. You need to eat. Focus on bettering your situation by finding and preparing for better work.
2) If you don't already have a library card, get one! The library is warm in the winter, cool in the summer and filled with things to read. There was a time in my life when I lived in a city library from the moment I got off work until it closed and all day on the weekends. There's much to be learned by reading and reading is not waiting - it's learning.
3) Don't sell the bike if you enjoy riding it. I'm a motorcycle fanatic and I can't live without a motorcycle to ride. You need a way to enjoy yourself and they're a good source of back-up transportation.
4) As you improve your situation, grow your machinery fund. Eventually, you'll be able to buy some capable machine tools and do what it is that you want to do.
5) You seem driven to learn and attain and that's a good thing. Learn how to focus that energy. The hardest thing for a driven person to do is be patient. Be patient.
There is nothing wrong with waiting. That is all I do is wait. Took me over a year to get my drill press and it isn't even that great of a drill press. that is not to say I don't appreciate it. I'm in a situation that saving money is hard. I didn't want to get this personal but food is an issue at times and having money saved for a lathe but no milk in the fridge makes it hard to hold on to that money.
I have a 1989 CBR 600 F1 which I might consider getting rid of to purchase a lathe.