It seems like a person who is prone to picking up and discarding special interests should take care, whatever new job they get, to NOT make it an interest or passion, unless maybe it's a lifetime passion (and I still have reservations about that). A job can easily be just the next SI, and when the interest is gone, the job performance will tank, because it won't be "important" anymore.
Just my opinion, honestly I'm trying to work through this very thing right now. I detest the concept of employment, feel my soul being sucked out 8 hours at a time, yadda yadda yadda. But it takes money to keep a roof over your head, food in your stomach, online gaming servers paid up...etc., but trying to work up a special perspective to help get the next job seems like perpetuation of the primary difficulty: trying to make it (employment) "matter."
Instead of feeling like I have to embrace a world of phoniness in order to fit in, I'm trying to just accept that it's something that must be done, and to get some job that I can tolerate doing all day long, with people I can tolerate being around. The things I love will all still be in my head and on my mind (it's what we do), provided that the mundanity of the task at hand allows for it. I'm not of the "find your bliss in your work" camp, because my bliss is often just a season, not a permanent monument. No bliss ---> no more exemplary job performance, and eventually you're trying to talk yourself into the next strategy for finding lasting employment.
I'm also leery of getting employment in a field I DO truly love (as if that were possible), because selling my time is such an odious proposition that I worry about the structural integrity of my passion, becoming so intricately connected with the awkward and difficult and flavorless world of getting and holding a job. I KNOW going in that I'm going to hate working, so I see no point in trying to put any lipstick on that pig.
If a person can stand office work, I'd suggest a Temp Agency. New climes regularly, and no "OH NO I have to do this every day forever!! !" moments. Plus I can START with the best of them. Beginning is where I excel. Just stay clear of offers for a "permanent" position, because you are doing SO UNBELIEVABLY WELL!! ! (for 2.5 weeks)
Stop me if you've heard this one...