How do I become an early adopter?

I am a 19 yo finance student, I have been making some money on my own for almost 5 years, and I have worked with very different strategies and markets. My experience is short, my capital is average for my age And I'm in the early years of training, but I'm not new to this either. I'm looking for ways to become a sustained "early adopter," since many of my successful investments have been by entering niche markets before the mainstream, but it has always been by chance or through pure experience; I have never had a clear plan for entering these markets.