My dad dragged me to a Bruce Springsteen concert as a kid. It was my first concert but I fell asleep in the middle. My second concert was Weezer on the 'Pinkerton' tour and 'Pinkerton' is the reason why I'm doing this.
I would tell 17-year-olds to be proud of who you are. Don't try to change yourself for others. Focus on school and your future. Boys and friends will come and go just focus on you and your future.