I don't know that this will be useful to you, but I would say that I didn't so much find my latest special interest (Indonesia), as much as IT found ME.
There was a little bit of a butterfly effect going on, a series of small steps before I got to this interest. I guess it began when a Japanese poster on another site alerted me to the existence of J-Pop. I started listening, and I branched out to more Asian pop music, like Chinese, and Korean. Eventually, I ended up listening to Indonesian singers.
I should probably also mention that my mother's family are Indonesian Eurasians, so it's a familiar culture for me.
Deciphering the lyrics of these songs, my interest in Indonesian culture slowly but surely grew. I heard about a new book being published, about the victims of the Japanese practice of drafting young Indonesian girls against their will to serve as prostitutes for soldiers, during the Pacific War. I knew that my grandmother had escaped such a fate, though the danger was present when she was still living on Java in the 1940s. At the same time, I grew very fond of a coworker, whose parents had also been born in Indonesia.
That same year, I visited a 'pasar malam' for the first time. That is a cultural event in the form of an Indonesian market, selling things like clothes, jewellery, statuettes, and lots of food, while there are also bands, singers, and traditional dancers performing. I had heard about often in my youth, but had never gone. And I loved it. So later that year, I went to a second, even bigger pasar malam. The snowball was still a-rolling.
The next year, at my next job, I grew pretty close to another coworker of mine, who was from the Philippines. She would often speak about the Philippines, what life was like over there, cultural things, historical things... and I enjoyed comparing notes and naming the things that my grandmother had told me about Indonesia, which my coworker referred to as 'our neighbours'. But I found my knowledge on the subject of Indonesia was lacking, and I could sometimes not answer my coworker's questions. So, I decided to read more books about Indonesia, to enrich my knowledge. And here I am today, still doing that very thing. Last year, I also visited a LOT of pasar malams and other Indonesia-related cultural events. Just last week, I saw 4 Indonesian films at an Asian film festival, and I plan to see two more that are playing at another film festival next week.
So that's my story. I would say my interest in Indonesia has grown and developed naturally, and still is. Before that, I was frustrated about not having any special interests any more, because my love for drawing and for wildlife/nature, seemed to be dying out.
_________________
clarity of thought before rashness of action