I hope you will find more fulfillment in the future!
By the way I never planned anything. I don't think more than a week ahead. Somehow I have fallen into the right places anyhow.
I tend to get really bored once I've totally mastered a job so I change a lot. I need a challenge. Because I do this within the same company (lucky to get the opportunity!) it didn't really make me look like a jobhopper, that helped alleviate worries about having a CV that's all over the place.. Also, some things I've done (like desktop office telephony) are totally extinct now so it is pretty easy to explain. I'm definitely in the "Senior IC" category in the article.
But I can recommend to look around if you're not happy. You never know...