In order to begin a time management program, you need to pinpoint exactly where you are wasting the most time. Likely, there will be many areas where you need better time management. Look at those areas and start working on them every day. Slacking off here or there won't help you. Be rigid.
Getting your life organized will help your time management because you won't have to think about what is coming up next on your schedule. You can also look up directions if you have a meeting, what restaurants are nearby, and a million other handy things to save yourself some time. Some people use their iPhone for these functions and some still use the Palm Pilot system. Whatever you use, make sure you can surf the net and plug in your daily schedule at ease.
Eating while just staring at the wall is a great time waster. Which is not a good thing. At least check your e-mail or read over a project you have to work on in the afternoon while you are munching your way through that tuna sandwich. If you read in your free time, do it during lunch to give you some extra time later when you are usually reading.
Each night, there needs to be a moment where you review what will be happening the next day. If you have somewhere to be at 8:30am, plan accordingly. Set your alarm to wake up earlier. Plan your route to avoid as much of the morning traffic rush as possible. It will only take a couple of minutes to refer to your schedule, but will save you tons of time the next day.
Making sure you are attacking a task in the order is also key to managing your time. Alphabetizing your record collection instead of doing your taxes is probably not a smart move. Make a list of things you need to do -- no matter how small -- and put them in order. You can then attack projects and tasks as they move up the list instead of trying to do pieces of projects at the same time. That just keeps you unfocused and wasting time.