How many hours a week do you spend sharpening the saw?

I first thought sharpening the saw was some new fangled way of saying choking the chicken, but I'm guessing you mean reading about ways to improve yourself because a saw near my unit just seems like a horrid idea. There are two distinct areas for improvement: personal (Tony Robbins, although I've never been a fan, maybe because I saw his big mug on tv when I was younger and thought he was weird) and market/general news (Bloomberg).

Market, economic and general national/world news (and being agnostic on the source): constantly. Absolutely constantly. Beyond a few other obvious career tips (like working hard and figuring out the way up the ladder) learning as much as possible about your market (be it sector, product, industry or whatever specific) should be what helps you the most. You should already have a proclivity for that if you like the industry. I started reading the Journal, The Economist and the FT when I was 18 not because I was a tool but it actually interested me. That helps a lot. That was in 1992. Those sources are the same and there are new ones but when you have a moment, read them. On the subway? Read those stories. Eating lunch? Read economic/financial news. Not FB. Not the NFL. Read about your industry and the economy. My wife often looks at me with scorn thinking I'm looking at my phone for espn.com but I can actually show her I'm on bloomberg or looking at a spreadsheet.

Personal improvement: carve time out and really determine good reads to do so. I don't like Tony Robbins but there are many other people out there. Unless you actually need a big improvement right then, assemble books you want to read and carve out time for them. As in say you have X hours per week for self improvement and reading things that actually could help your career. Then when you get a few years into your career you can read actual literature.

Good luck.