So long to the days of claiming you don't know where you want to go for lunch because, as an agent, you have a lot of decision-making power in your hands. Be prepared to use it.
Agents help clients by acting as their liasion. They negotiate terms of contracts, particularly on a financial level. The more money you make your client, the more money you'll be able to collect. So you'll want to work on your negotiation and persuasion skills.
Agents work in a variety of industries, so you can have your pick of opportunities. Some work in the entertainment industry, while others are in the financial scene. Wherever you end up, you'll most likely be working a full-time job. Although, some client meetings can be done outside of normal work hours. This means you might want to prepare yourself for some late nights.