I'm not saying I was ever overly gifted, I was just a very introvert child who spent a lot of time thinking and through that became depressed about my seemingly pointless existence.

Well I just wanted to say that what helped later in adult years was discovering true love. I know it sounds corny but once you realize that life on this earth is short, and that short time can be used to experience great feelings of love and togetherness with other humans, you do feel less depressed about it.