What are the benefits or drawbacks of basing one's entire life on the pursuit of one dream?

Well some benefits to base someone's entire life on one dream is that it could work, and you could succeed. Drawbacks it that you might not succeed and could lose a lot, because you wanted to chase after this dream. It could be great to take the risk, but it also might not work and you could lose a lot because of it. You could lose a lot of money and maybe friends, or you could gain a lot of money because of your dream and friends along the way.