Sound advice, but it would be awesome to live from playing the game - and live a good life.
It certainly would be but it takes a lot of work. For example, I have friends that play every single day.. literally every day go to the gym, workout, drink a smoothie and begin their day.
Most of them played non stop MTT's and would hit in some, cash in some or even lose for a week or so.. that can take a toll on not only your bankroll but mentally. Imagine playing $100 dollar buy-ins 5 times a day at minimum and producing nothing because of beats for - a week straight. That is something that I think is really important when thinking about making poker a career.
By the way, some hated the life and found it a necessity, and some enjoyed it. I can't give you the difference in winnings but I'm sure that if you are mentally sound with your play and winnings compared to your losses and enjoyed doing it - every day.. then you are good. It's interesting to learn from what they have said about it.