http://www.toddlertime.com/dx/borderline/index.htm Here is one of many places, including PsychCentral, that you could read more about mood swings.

Since your mom seems supportive and you are curious, why not talk with a therapist to see how that goes.

Here's a site about therapy: www.guidetopsychology.com. It has a nice Question and Answer section.

I like your Kahil Gibran quote