Interesting discussion and well put. It would be relevant here to mention though that one of the commonest tie ins between impulsivity and procrastination is ADHD. It is something that is well worth considering when anyone is faced with industrial strength procrastination & impulsivity problems - as it is usually missed in Adults. Just as modafinil can be helpful- so can the psychostimulants. They are also much older, better understood drugs with a very clearly understood safety profile.

Equally it is worth noticing on the "value " end of the equation- that sometimes we procrastinate because we are subconsciously aware that what we are proposing to do is not the most important thing we could/should be doing.