Perhaps do the parts of the task that do not require thinking and that will lead to the thinking part of the process. Perhaps write out a detailed description

Perhaps do the parts of the task that do not require thinking and that will lead to the thinking part of the process. Perhaps write out a detailed description of the task (even if its a small task) without a commitment to tackle it. That might concretize it for you. A recent article on procrastination referenced on HN summarizes the ideal process as thinking in concrete terms to get started and then visualizing the wider ramifications as you are moving forward.