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?

Fund management has always been a headache for me. May I ask you guys, how can I do a good job of position control?

How to solve the conversion between large cycle and small cycle?

What is a perfect trading system? Or is there a so-called perfect trading system?

What kind of system can accurately locate support resistance and trend when doing transactions?