Motivation Pill?

One of my grandsons' girlfriends posted a question on Facebook - "Is there a motivation pill?  I'd like to abuse that!"  She's so smart.  She probably has asked a very important question in a very funny way.  I know exactly how she feels.  There are those who would tell you that there is a motivation pill - it's called "speed."  The problem is that you will definitely abuse it and you may be motivated but not necessarily in a good way.  I am particularly unmotivated right now.  Not sure why.  Retiring to a cave for a long, long time sounds soothing and good.  It's not that I have a bunch of stuff to do that I don't want to do.  I just want to stop for awhile.