You may find it easier to compile several checklists (covering personal, study, and workplace, for example). Try different approaches and use the best for your own situation.
Keeping a properly structured and thought-out checklist sounds simple enough. But it can be surprising how many people fail to use them at all, never mind use them effectively. In fact, it’s often when people start to use them effectively and sensibly that they make their first personal productivity breakthroughs, and start making a success of their careers. The video, below, gives some tips on how you can start to use To-Do Lists more effectively.
But in you’re in an operational role, or if tasks are large or dependent on too many other people, then it may be better to focus on a longer-term checklist, and "chip away" at it day-by-day. Many people find it helpful to spend, say, 10 minutes at the end of the day, organizing tasks on their list for the next day.
Do you often feel overwhelmed by the amount of work you have to do, or do you find yourself missing deadlines? Or do you sometimes just forget to do something important, so that people have to chase you to get work done? All of these are symptoms of not keeping a proper "To-Do List."