For procrastination, you might try not sitting down hardly at all.
If your default is being seated, change the default to standing or being in motion instead.
Then only sit down for one particular reason at a time, most deliberately.
Whether one seated session naturally allows the eventual feeling of completion, or OTOH far from completion, as soon as that session is drawing to a close get ready and go back to the default for a bit of time.
Standing up, moving around, accomplishing something that doesn't require sitting (housework & gardening are good in moderation), all can help give you better perspective before you commit to your next seated session. Whether you are picking up where you left off or leaving that alone and going back down for something completely different.
At the other end, it's not just procrastination, but productivity.
Things like this really helped when I had 5 desks with various combinations of ambitions & obligations.
If your default is being seated, change the default to standing or being in motion instead.
Then only sit down for one particular reason at a time, most deliberately.
Whether one seated session naturally allows the eventual feeling of completion, or OTOH far from completion, as soon as that session is drawing to a close get ready and go back to the default for a bit of time.
Standing up, moving around, accomplishing something that doesn't require sitting (housework & gardening are good in moderation), all can help give you better perspective before you commit to your next seated session. Whether you are picking up where you left off or leaving that alone and going back down for something completely different.
At the other end, it's not just procrastination, but productivity.
Things like this really helped when I had 5 desks with various combinations of ambitions & obligations.