Sounds like a disease eh?
I tried this once and it work at least 50% of the time.
Whenever I thought about doing something and got lazy to actually
do it, I will quickly stand up and look at myself... not literary
of course... and heck myself into doing it.
I also noticed that alot of inspirations comes from my lying on bed
or sitting down... then I will get really too lazy to do anything
at all.
Telling myself about last day on earth never works for me.
Telling myself how many days left before I reach half my life
(assuming I will reach 80) really gets me started!