I've been doing the 13 hours-a-day thing for about 2.5 years, it was great when I started, that's the sort of thing you need to do just to get a handle on the whole IM world.
However, it feels like it's starting to work against me. I'm thinking of focusing on chunking my day in to 2 or 3 hour spans, consisting of ONE money-making method per hour.
As of now, sitting at the computer for 13 hours doesn't allow me to be as efficient as I could be, and could possibly allow for everything I learn on a daily basis to digest itself, make sense, and formulate my own ideas from it.
How are you guys handling this? If you are working 13 hour days, how many of those hours would you say you're actually WORKING?