Anorexia isn't skipping a meal. Bulimia isn't making yourself puke every once in a while. Self injury isn't taking a razor to your skin after he breaks up with you (again). Drug addiction isn't trying it once. Insomnia isn't not sleeping for two nights. Schizophrenia isn't seeing things when you're high. MPD isn't acting like someone you're not because you're upset. Depression isn't feeling low for a week. Anxiety isn't being nervous when you have a test.