That's a coincidence. I've just been listening to the podcast. FAA does come across as very well-balanced - he kept reiterating that he has a good life outside of tennis and that helps him keep his balance.
I was interested to hear him talk about his slump and periods of inconsistency. Justin Roberts put to him something that Zverev said to the effect, "Either Felix is really on or really off," and asked him why that might be. FAA said it's partly his gamestyle, that he was never taught to just put the ball in the court, he was taught instead to take any opportunity to hurt his opponent, especially with his FH, and that aggressive style comes with more risks. He is working on trying to be more consistent but said that he would rather take bad losses than become the sort of player who just puts the ball in the court.