from the interview of Leatherass in the well:

Willietherock
Could you briefly outline an average poker playing week for you in terms of no. of hours playing, no of sessions, lenght of sessions ect?

Leatherass
I probably play about 12-15 different sessions that last 2-5 hours each. I usually spend 4-7 hours a week studying

Phil153
How much of your success was natural intelligence/aptitude, and how much was hard work?

Leatherass
I would say that it was 25% talent and 75% hard work. Truthfully it may be even less talent wise. It took me a lot of hands to get where I am at. But there is no substitute for hard work in this game or really anything in life.

JimmyRare
I want to be better than you, what does it take?

Leatherass
Work hard. And when you think you've been working hard, go work some more. That's how I got there.

Tucanjo
How is your routine of playing (how many hours and how many cores)? And studying?

Leatherass
90%+ play and 5-10+ studying