My kids are driving me insane

Kids drive their mothers insane. Every parent knows this. My kids constantly do things that drive me insane

1. My daughter has fights with friends at school. She tells me she is angry at a friend
 but won't tell me what happened
2. My charming and totally insane toddler will like a song one day then hate it the next.
 The same goes with food, clothing and well, pretty much anything.
3. Mr Prep will tell me i am the best mummy in the whole world one minute then
 hate me the next, his moods also constantly change, he is happy and on top of the
 world one minute then tearful and angry the next.

I have realized that I need time away from them or I will loose my mind completely.
I laugh at myself when I think back to when my daughter was first born. I never wanted
 her out of my sight. Things were so easy (well, you know, easy compared to now).
 I thought I would never be able to part with her. Then my son was born. Things were a
 bit harder then. I started to go a little insane. With my third and fourth child I have completely
 lost my mind. Gone are the days of the simplicity of one child. Now I have four to run after and
have four to drive me insane.

I have decided that they must hold meetings at night, where they work out how to best
drive me insane and have me wanting to run and scream from the house the following day.
With a 6 year old (or as she says six and a half), a five year old, a two year old and an
almost 1 year old, I am surprised I am still alive at the end of the day when I collapse on a
 heap on the couch.