Have you ever made up an excuse to avoid a social obligation so you could spend the evening by yourself? Do your friends and/or family understand when you need some quality time alone?
i'm pretty honest about that stuff. i don't care so much if people understand it or not. the reality is that i am a person who requires a shitload of alone time. i do love people, some especially, but when i need alone time, i will tell you so and if you can't accept it that's your problem. i know what i need. it might seem odd to others but that doesn't mean it's wrong.