Quit or Adapt?

Let's say your son started at quarterback for the same coach in the same system for the last two years.  And you've spent a ton of cash on quarterback camps and offseason training.  Things change.  So get comfortable being uncomfortable.  The next year a new coach unexpectedly comes in, with a different offensive system.  As a result, your son is moved from QB to Strong Safety.  Do you quit or adapt?  When Steve Jobs gets the boot at Apple then we can't expect different or better treatment in our own situations.  Do you quit or adapt and come back stronger?