There are many ways to manage time effectively. This article contains some practical, easily implemented ideas for how best to keep track of our most resource: time.
I particularly liked #6:
Take five minutes before every call and task to decide what result you want to attain. This will help you know what success looks like before you start. And it will also slow time down. Take five minutes after each call and activity to determine whether your desired result was achieved. If not, what was missing? How do you put what’s missing in your next call or activity?