Procrastination is a calculation. It’s a calculation of value. It goes something like this:
If X=the pain of doing the task;
and Y=the pleasure of having done the work;
Then the task will be done when the value of Y is greater than X.
Put another way, Value=Function/Cost, where Value= the task and Function=Y and Cost=X.
The task of quantifying pleasure and pain will just have to wait.