Yes, and in my recent experience, following the "pomodoro technique", aka "timeboxing", where you work in 25 minute sprints, with a timer set, and focus on ONE, WRITTEN DOWN task for these 25 minutes, whereafter you take a few minutes break, possibly reconsider if you continue with the same task for the next 25 minutes or choose something else, and then continue.
This can help in this paralyzed kind of state, since it is harder to keep distractions away (and keep 100% focused on one task) for 25 minutes, than for a whole day ... and in those few minutes in between, you are allowed to distract yourself for a very short time.
And to help yourself remember to do your pomodoros, you can use a tool like Beeminder[0], which can track and show you your progress towards your goal as well as act as a commitment device[1] to keep you working on goals over time.
This can help in this paralyzed kind of state, since it is harder to keep distractions away (and keep 100% focused on one task) for 25 minutes, than for a whole day ... and in those few minutes in between, you are allowed to distract yourself for a very short time.
This worked for me like nothing else.