Happiness is..

...enjoying your work.

And you know that you enjoy your work when you work for the whole day on saturday and can still say that you don't mind going back on sunday to do some more.

now that's satisfaction.

sure i've complained... it's probably the thing most people expect you to do and I guess i felt a bit of loss that a day which I intended to just bum has passed me by. But it sure beats army hands down!

I guess work gives you a sense of purpose, that you're actually doing something productive and 'sensible'... but you have to weigh all that with a 'greater' purpose. Otherwise it is pointless (in the eternal sense)