How do you stop?

How do you stop from going crazy when.....

You have a baby that has been teething for 2 weeks straight, and there is no end in sight.

You have a baby that suddenly loves hitting, pulling hair, clawing at faces, etc.

You have a baby that cries at the drop of a pin.

You have a baby that is cranky beyond belief.

You have a baby that is into EVERYTHING, no matter how many times you tell her no and try to distract her with something else.

HOW DO YOU NOT GO CRAZY?

If anyone knows please fill me in.