No one in their twenties knows what to do with their lives. First jobs are exciting, challenging, and scary too. Just look around. Pick a good one. And do it well. Start by forging a great reputation as a hard worker. One who values his career. Be social. Save some money. Take your first pay and buy yourself something great. And be kind. Your co-workers have all started somewhere for the first time too. So they will understand. Ask for help. Be involved. Have fun. Your confidence in life and in your career will improve.