How do you know if you can trade full-time?

I resigned yesterday, due at the end of the month, I want to do trading full-time, but I don’t know how far this road can go?

How to accurately enter the foreign exchange point?

How to choose between opening a position through a breakthrough and opening a position with a pullback in trading?

How to explain leverage in the forex market?

What books did you guys read when you created your own trading system?