PushList is a smart to-do list app that known how to prioritize things. Start adding tasks to your lists and define how important & difficult they are in your opinion. PushList will do the rest.
Look at the top of the page: PushList gives you a clever estimate on how big impact the current task has on the remaining project. This will give you a little bit of extra motivation when you can track the impact of your work.
You can add up to 5 lists. Your lists are stored in a local cookie on your computer. If you're worried about cookies, then don't worry - the cookies are on your computer only and no 3rd parties can access them. Just remember not use any lists on public computers as they will be visible to anyones curious eyes.