Complex sentence: Sutter Keely (Miles Teller) is a high school senior, charming and self-possessed, he's the life of the party, loves his job at a men's clothing store, and has no plans for the future.
Split into simpler sentences: Sutter Keely (Miles Teller) is a high school senior, charming and self-possessed. He's the life of the party, loves his job at a men's clothing store, and has no plans for the future.