"Beware that, when fighting monsters, you yourself do not become a monster... for when you gaze long into the abyss. The abyss gazes also into you." ~ Friedrich Nietzsche
Sorry, couldn't resist.
You're not weird, hon. I've felt the same way many times myself. I've found that the best way to combat that is to give our existence meaning. To find something we're good at, and do it. To shift the focus away from introversion.
What are you good at? What do you enjoy?