An agent may be able to negotiate higher wages, taking a percentage of your earnings as a fee. Securing an agent is itself a competitive process, involving networking and often inviting agents to see you perform, or sending them a showreel of your TV or film work. Very few people become wealthy through acting, although for some the rewards can be immense. On average, actors spend about 80% of their working life 'resting' (not employed as an actor), so it's likely you'll need other ways of generating an income.