As far as the meaning goes, I think it's about someone who self harms. They're able to control their performance in school, but at home their life is a mess. Whatever they use to harm themselves is really meaningful to them, but they resent it to a certain extent (friend v. lover). The person is unhappy about being less than amazing and feels a lot of release when they harm themselves. The kiss is symbolic for an act of harm. The surfaces replaced indicate covering up the self harm so that anyone that would try to "help" is unaware of the evidence of injury. The person hasn't gone far enough to kill himself/herself, but they intend to (sleeps is symbolic for suicide).
As far as the meaning goes, I think it's about someone who self harms. They're able to control their performance in school, but at home their life is a mess. Whatever they use to harm themselves is really meaningful to them, but they resent it to a certain extent (friend v. lover). The person is unhappy about being less than amazing and feels a lot of release when they harm themselves. The kiss is symbolic for an act of harm. The surfaces replaced indicate covering up the self harm so that anyone that would try to "help" is unaware of the evidence of injury. The person hasn't gone far enough to kill himself/herself, but they intend to (sleeps is symbolic for suicide).