Productivity is as much psychological as it is anything else. How many times do you complain that you never get to the end of your to-do list?
Ticking things off your to-do list makes you feel positive and in turn, make you more productive. To this end, make your to-do list as productively positive as possible. Avoid adding items like:
'Update my website'
Because the chances are it will sit at the top of your to-do list for months. It's too big a task, and too many things need to happen to be able to tick it off. With this example there will be several things that you need to decide before you can even tackle this i.e. are you going to get new photos done? Are you changing platforms? Do you need to enlist the help of a copywriter?
For this example, let's just make some assumptions on those.
Spend two minutes longer adding separate items to your do list that will help you achieve that goal:
Speak to my network about web companies.
Get 2 quotes for amends/updates.
Write new copy.
Collate images to send to the web designer.
All of those five items are much more manageable, and will all get you closer to achieving the end goal.
What jobs do you have on your to-do list that you have never got around to doing?