[literallyaduck]

Start a business and ask them to invest. Call them if they refuse. Either you become rich like them or they stop answering your calls. I would never loan a friend money, or go into business with them. As far as money goes why do you think you would be happy with more when you aren't with what you have now.

Relatively speaking anyone in the modern western world has it pretty nice in comparison.

Enjoy life, learn to cook and laugh at people going to restaurants. If cooking and eating aren't your things, find what is and enjoy it, money is becoming less and less important to living a rich and enjoyable life.