Polymath or Hobbyist with Commitment Issues?

I play guitar, I play mandolin, I draw cartoons, I write poetry, I build robots, I write simulators, I read novels, I walk up hills, I take photos of gnarled tree roots...

I think about the vortex model of the solar system, the complexity of the physics of bouncing hair, the nature of implied pain, the mental graphics of quadratics rotated through the t-axis

I keep promising myself that I will finish a letter, complete a painting, make the robot I just built from junk do something useful...

Yet I suffer from procrastination as if it were an arthritis of the mind...

Am I so diverse that I am physically unable to focus, or am I....as my mother always told me...as my wife still tells me...as my boss has often said....

Just a lazy freaking a-hole!!!????

I'd like to argue my nature, but I can't be bothered today.