Please dont take the pill route,nothings worth that.You have lots of good advice in your replies, try them first.
However it sounds like your unit is not a good place to work,try somewhere else.We all have bad days but they shouldnt be on a regular basis.If nurses and cna"s helped each other more we wouldnt have these bad days,
its all about team work.
We all strive to do our best but remember without the resources its an up hill BATTLE
Good luck in your decision
You are not alone :)