I had a bit of experience with this question, and my own tactic is to:I find that I am good at collecting items and putting them on the list, but when it comes time to "work the list", I rarely refer to the lists to decide what is next. While my lists are not perfect, they are a pretty comprehensive view into my next actions.
Change the verb.
When I review my lists, and I find something that's "been there for a while," I challenge myself to take the first word (say the first word was "draft") and change it to another word.
If I've seen one action too long, and have not yet started on it, I might change it to:
Brainstorm conclusion to next Training Magazine article.
This "change" makes it easier for me to "get started" next time I sit down at my desk.
Give it a try!