Do you really need to complete this task or are you motivated by expectations people may or may not be placing on you?
Do you have the capacity to care about completing this task right now? If not, can you postpone or delegate this task to someone else?
Are you distracted?
Do you have enough time to do it or do you need to find another day/time to complete the task?
Do you need to break the task into smaller steps?
Do you know how to complete the task (do you have the knowledge and/or skills to do it)?
Do you have the tools and/or the supplies to do it?
Are you fixated on perfection instead of moving forward focusing on the progress you'd make by taking a step in the right direction?