Yeah, I get that... the "passion principle." Your girlfriend evidently has a true passion for hats... and sounds like she found her niche.

For me, part of the challenge has been that there are things I am quite passionate about, but they pretty much don't have any "commercial value," which kinda sucks as long as we live in a world where stuff "costs money." My wife, on the other hand, turned her fascination with understanding the human psyche and wanting to help people (originally separate interests) into a pretty successful life coaching gig.

For now, I'm thrilled to be writing here and even getting paid a few pennies for it, now and then.