The ideal life would be one where you had a hobby that as a byproduct made you money, you had a hobby that as a byproduct kept you healthy, you had a hobby that as a byproduct made you smarter and more creative.

“One good test is worth a thousand expert opinions.”
– Wernher von Braun

Optimist: The glass is 1/2 full

Pessimist: The glass is 1/2 empty

Engineer: The glass is twice as big as it needs to be

Excel: The glass is January 2nd