The best business in the world ?

I try so many business and spend a lot of money (100,000) my bank account is very sick and running backwards so what I have learn that if i didn’t do this i will be fine and has no issue but if I didn’t do this also I will never learn about business .
The main and the only thing I learned about business is don’t do it for what only people want or what you think that this business is the best and I will make profit for me no no no
The main business is what you know most and love in your life and try to turn it into a business the second thing don’t spend money that is not your money spend only what you can afford and ready to loose.

But now I learn and start again I am doing little well in my business

This is my overview about business please comment about your story

Thank you
Mazin