Help with 3 year old hoarding and emotional mess

I am seeing a lot of controlling behaviors with my 3 year old such as hoarding, obsessions about paper, picking, ripping books and paper, and collecting pilesof junk and nick-nacks throughout the day. It used to be cute and quirky, and now it is beyond maddening. She hardly plays; she collects stuff all day in a box on the couch. She piles everything in it and on top of it until it's overflowing. She cries if we go through it and try to sort it all out.

Her emotional state is a mess. I don't want to go anywhere or do anything with any friends or family because she is miserable off and on (and unpredictably) from the time she wakes up until the time she goes to bed. Especially if people come to our home, she is extremely sensitive and upset about every little thing. She ends up wanting me to hold her or sit on the couch and not talk to anyone. Having a conversation with anyone is nearly impossible as she interrupts every few minutes with a problem needing attention. I thought maybe she needed more discipline, so I started being very strict with her about her whining, fits, and crying (which seems non-stop somedays). But that's when her picking started. She picks at her fingers, lips, bites her nails, and holds herself when she has to go pee.

I'm really afraid I messed her up by giving her chamomilla 200c every night for four months when she was about one year old and teething like crazy (I had no idea what I was doing, obviously). I think she needs some an antidote to cancel out what those repeated doses proved.

Any help and insight is greatly appreciated.

(This post contains an image. To view the image, please log on.)