Preplanning tasks for the following week is an effective time management strategy, and focusing on critical tasks that need to be completed each day prevents wasting time. Saying "no" to tasks when too busy also saves time.
Making a list of projects for the coming week ensures that there are no surprises and makes forgetting tasks less likely. A list also helps in scheduling time for each task throughout the week. Updating the plan each evening keeps the list current and is an opportunity to adjust for changes and unforeseen issues. Carrying a tool, such as a clipboard, also helps the updating process by keeping physical reminders of new tasks.
Focusing on each task keeps them from taking longer than expected and prevents distractions. Taking small breaks between finishing tasks helps with maintaining focus. Saying "no" when already busy prevents becoming overwhelmed and losing focus on the most critical tasks.