Identify & Recover wasted time.

Instead of watching a one-hour TV show, tape it and watch it in 45 minutes by fast-forwarding through the commercials. Don't spend a half hour typing a lengthy email when you could accomplish the same thing with a 10-minute phone call. Batch your errands together and do them all at once.

During the summer between my second and third semesters, I found an apartment across the street from campus that was slightly closer to the engineering building than my on-campus dorm room. So I moved out of the dorms and into that apartment, which saved me some walking/biking time every day. I was also moving from a two-bedroom dorm which I shared with two roommates into a smaller single-person studio apartment. This new apartment was much more efficient. For example, I could work on programming assignments while cooking dinner because my desk was only a few steps from the stove.

Trying to cut out time-wasting habits is a common starting point for people who desire to become more efficient, but I think this is a mistake. Optimizing your personal habits should only come later. Clarity of purpose must come first. If you don't have clarity, then your attempts to install more efficient habits and to break inefficient habits will only fizzle. You won't have a strong enough reason to put your time to good use, so it will be easy to quit when things get tough. You need a big, attractive goal to stay motivated. The reason to shave 15 minutes off a task is that you're overflowing with motivation to put that 15 minutes to better use.

For example, you might have a career you sort of like, but most likely it's not so compelling that you'll care enough about saving an extra 15 minutes here and there, even if your total savings might amount to a few hours each day. But if you've taken the time to develop a sense of purpose that reaches deep into your soul, you'll be automatically motivated to put your time to better use. If you get the highest level of your life in order (purpose, meaning, spiritual beliefs), the lower levels will tend to self-optimize (habits, practices, actions).