When is a hobby not a hobby?

If in your heart-of-hearts you believe that your hobby is a potential portal to something else then it isn't a really hobby is it?  If you kinda-sorta think this thing you do on the side might one day make you wealthy enough or famous enough to supplant your 'real' job then you'd do well to treat it with the seriousness of an actual job.

Anything less and you'll always feel a little bit short-changed.