>>1 Do new things. Things that scare you, make you feel uncomfortable and stretch the limtis of your abilities. Take up new hobbies, try new things. Have you considered try to find a girfriend/boyfriend? (not depending on you gender in the slightest).
I can relate to parts of this, day in day out school life can be very bland but its what YOU do to make it colourful is up to YOU. Unless you're suffering from a depression or mental issue in which case this may be impossible some days.
The schooling system is a vicous 13 or so year cycle, but an important time in your life. It will shape what you future and yourself.