Read Getting Things Done by David Allen over the last few days and been trying to implement it. I'd heard good reports of it and am feeling so overwhelmed I just had to try something. I've surprised myself (a tad cynical about managing my time any better) about how well it works. I think I've got the process weighed off, now it's a matter of getting into the discipline which follows - reviewing and tracking everything.

The key points for me have been:
- track everything - so your brain is not trying to keep stuff in mind
- tweak the process to suit your own situation - but don't skip bits
- timetable the weekly review - so it doesn't get lost in all the stuff you're doing.

What's been best for me has been having a 'zero inbox' for several days now which relieves a lot of stress, shows the system works and makes it worth doing just for that.

More info and some freebies here: http://www.davidco.com/