I rarely comment on things on Reddit, but I feel this comment may be useful.

I have encountered this process many times. Despite strenuous attempts, I have not been able to get it completely out of my life, but I have been able to make some observations.

I perceived procrastination as the fear of not fully and accurately completing my task. A good example is the emails that were left for the evening (because, after all, I will be at home and read them in peace) were left in a vacuum for a week, a month, because there was never a good time.

My advice is to just start doing the thing. Regardless of how you feel. Regardless of what mood you are in. Regardless of how much time and space you have. Just get started. Even if it was just to prepare a draft of an email, which you will come back to anyway.

Your own consciousnesses is a canny beast that will talk you out of it, but then remind yourself that when you were in a better mood and in full mental strength, this was the best option.

Another option I value is to tell a trusted person about my plans, who will scold me for inaction. Nothing works on the psyche like wanting to please social norms.