Is there Value to My Inner-Crazy, My Dark, My Unstable Parts?

One thing I often find I can rely on in myself is an ever-changing internal landscape... Basically, I can be really moody. lol. There are times the sun is suddenly covered by dark clouds... The lightness of being, the laughter, the joy suddenly becomes hidden. And my general response to things changes... I'm more likely to feel irritated and agitated over random things... And while it seems like a part of me is away on vacation, another part of me makes its presence known. A lot of times when the laughter disappears, I don't know what to do. Am I supposed to be learning something? I often think I'm supposed to be learning something... like I'm attributing significance to my experience... maybe as a way of coping. But what if I'm not supposed to try to cope, but somehow surrender? I wind up at the place I often wind up... wanting to know if there is a point or purpose... wanting to believe there is... and yet feeling like I can't fully know.