Three words for you
Adam...
EXPERIMENT
[size=18px]EXPERIMENT[/size]
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EXPERIMENT[/size]
Seriously, I've been using PS almost steadily for close to a year. Every day, I make it a point to "learn something new". Sometimes, this entails working my way through a tutorial and at other times, it means picking up one of the "challenges" that get thrown around here.

Both scenarios are always great fun!

But, the bottom line is, you
stay at it, you
keep at it and you
EXPERIMENT with every tool, new technique, filter, etc.
And yes, sometimes you just don't have the time... then you 'bookmark' and place the things that you don't have time for at the moment, into a "to do" folder so that you can go back to it when you do have the time.