Good niche is intersection of two skills. For example, if you can do biology + programming, you can get jobs in bioinformatics. If you do education + programmin

Good niche is intersection of two skills. For example, if you can do biology + programming, you can get jobs in bioinformatics. If you do education + programming, you're looking at ed-tech. Etc. Being a domain-expert (even an armchair-level one) goes a really long ways. Niche markets are less efficient. There aren't as many jobs, and when an employer needs you, they /really/ need you; if you go into narrow enough niches, there can be zero competitors qualified for the same position. That gives a lot of leverage. The flip side is there might be zero job openings for months. On the whole, I think that's an advantage, but it can go both ways.