Hello adamritterbush, I like the example you gave. Of course you will be motivated to do the two million dollar task. But procrastination due to overwhelm is a little different. A person with several two million dollar tasks on his to-do list can get overwhelmed and postpone getting things done. Overwhelm doesn't have to do with the reward involved, it's a negative feeling of not being able to handle or do all you have to do; it's more like an overload.
Thanks for sharing your thoughts.