Complex sentence: The next day, Bobby's co-workers, Donald and Tiny, belittle Bobby's career as an actor and his constant excuses for missing work, telling him that he will never make it as an actor.
Split into simpler sentences: The next day, Bobby's co-workers, Donald and Tiny, belittle Bobby's career as an actor and his constant excuses for missing work. They tell Bobby that he will never make it as an actor.