A LIST of "things to do" for each day and week is a valuable aid to managing your time. A "to do" list organises your thinking and planning onto one form in the least amount of time with the maximum amount of efficiency.
A "to do" list is especially helpful if it coincides with the record-keeping you already do for your company. After a short time, you will find yourself handling a greater volume of work without increasing your stress. You will simply become more efficient.
Because we are creatures of habit, it is a good idea for you to fill out your "to do" list at the same time every day. This way, you will be committed to a routine and will avoid procrastination.
Whether you fill it out in the evening for the next day or first thing in the morning for the current day is unimportant. Keep in mind, however, that you are often in a hurry in the morning and may be tempted to skip it.
Parkinson's Law states that work expands to fill the time allotted for it. Your "to do" list should, therefore, define a specific amount of time (if possible) for each activity. This will keep work from "expanding".
Your activities should be listed in order of priority. Work on high priorities first. In listing the activities, it is helpful to spell out the result as well as the process. Stating when, where, and what you are going to do increases your chances of doing it successfully.
As the day goes by, check off completed activities and make any notes that seem relevant. In the evening, make out a new "to do" list for the next day and include any activities you did not complete. Always save your "to do" lists for future reference and evaluation.