Re– read your emails, check your checklists, make sure you put a stamp on the envelope, mark it of your to-do list…..
One of the reasons we are not productive and claim to not have enough time in the day is having to do the same work more than once. Double check what you are doing to make sure you are doing it correctly. Being in too much of a hurry or multi-tasking can make you do un-needed, extra work. Do it right the first time and it will save you time.