learn how to manage my time

Today I printed off calendar sheets with each day divided up into half-hour blocks. I will write in each block of time a task so I know how much time I have and how many things I can realistically accomplish.
When I complete it, it looks really stupid, but I forget how much time some mundane things take. For example, I need to slot “drive home” in the half-hour time block between 5 o’clock and 5-thirty.
This helped before, and I think it will help me again to get things done and get places on time.

I’m not sure how it happens, but time just slips away. Then I end up not finishing projects (which I feel guilty for) and being late for things. If I can accomplish this goal, the other two may fall smoothly into place!
I listened to an audio book awhile back about time management. The author suggested scheduling your whole day, even chores and free time and ending one thing when it was time to do the next. I did that for awhile and it helped, but lately I’ve just been slacking off big time. I’ve GOT to conquer this!