Sometimes I feel like too many posters limit themselves to the business opportunity and online marketing niche. This is a great niche, no doubt. There are a lot of people making money in it. However it can be very competitive, and there are thousands of other niches with potentials.
Dont limit yourself to one niche. Explore everything else out there, from health, sports, supplements, language courses, e-commerce, clothing, etc. There are literally too many niches to list.
What niches have you had success with?