How about giving yourself a few quick victories to build momentum? A long list of undone tasks can be pretty demotivating. How about you choose just three things you're going to do today? Make them specific. For example, instead of writing "Report" on my task list (it's a project that will take weeks), I write "Report - Change charts to reflect 12 months." That way I don't get too overwhelmed deciding how to approach this huge project. I just have to do what's next. Then, when you finish your three things, you can decide to add more or not.