I would say changing to a more consistent work schedule is definitely a good idea, but don't lose the "schedule" part. There's a huge advantage to being able to say "okay, now is work time".
However, after writing that I imagine it's a very personal thing, not everyone will work best in the same way.
Haha yeah I totally agree there. I've got a time allotted every day after work that I really could fill with at least 30 minutes of coding, but somehow it gets diverted to god-knows-what.
Yeah, that's always the hardest part. Messing around on HN/Reddit/Twitter/etc. and/or watching TV - it's so easy to not even realize that you're procrastinating. I find that when I realize what I'm doing I can usually extract myself and get to work - the hard part is just getting to that point!
However, after writing that I imagine it's a very personal thing, not everyone will work best in the same way.