One of the most challenging part of building a business is thinking of what business one should make. One should not just put a business which they think has a potential, but also for a business that they will enjoy doing. Both the market and your own preference should work together.
I have a friend who was pushed by his parents to put up a restaurant business since his parents already own one. However, the business he put is totally independent from his parents' business. He doesn't like the food business but since he was given a capital for it, he obliged.
As expected, pressure and boredom caught up with him. He got pressured that his parents established a successful restaurant while his is not doing good. He got bored because it's not what he wants to do. He's into extreme sports and that's something you can't associate with that kind of business.
I talked to him yesterday and he said he is closing his restaurant in 2 weeks. It's only been 9 months after he opened it and now he is readying to pack things. He said it just won't work even if he tried his best. It just won't interest him.
Personal preference on what kind of business a person must put up really matters. Choice of business must work hand in hand with what you like doing best, the need of the market, the location and of course, the initial capital. If one is lacking, it has a huge tendency of not celebrating its first year anniversary. Though there are some people who learns to like that business they have in time, that do not always happen.