Having clean list of meaningful tasks one of the foundations in successful time management. You need a smart to-do checklist if you want to reduce anxiety, save time, and become get-it-done-on-time-no-stress type. It’s called backlog.
Don’t use Microsoft Outlook Task feature. Use simple mail items to manage your tasks. This approach reduces places you need to look, it reduces number of clicks you need to make. It will save you a lot of time which you could use more productively.