Do what matters first. This concept seems simple, however so many people spend time doing things that don't really matter or give small returns on their investment. Look at all the tasks and goals that you have set for yourself daily, monthly and yearly, and then ask yourself what items give you the most return for your investment. Then commit to getting those items done first.
Learn to say no. Learning to say no will save you so much time because it will allow you to ultimately build on Step 1, doing what matters. Often people get distracted or slowed down because they can't say no to something of lesser importance. You must learn to flex this muscle, otherwise you are allowing others or less important things to take your time away from you. Remember that time is a resource, so guard it with vigilance.
If you don't schedule it, it probably won't get done. Get a calendar and force yourself to schedule as much of your day as you can. It's too easy to say you will do something and then not follow up on it. If you schedule it and set realistic goals to accomplish your task, you'll soon realize the power of this time management technique.
Things get done by taking a thousand little steps. There is no such thing as an overnight success; all success comes from doing one thing at a time. If you have a goal or task that needs to get done but you find yourself dreading the task, break it down into smaller steps so that you make progress.
Complete what you've started. Ideas get you started, but it's discipline that helps you finish. Make every effort to complete every commitment you've made. No matter how big or small the commitment, make sure you finish it. This tactic causes you to think before you promise, and it gives you a sense of accomplishment.