Why so angry?

I swear everyday I come into work...my patience is gone and I become snappy at everything. I guess I am just really tired of doing everything myself and I become irritaed at every little thing...UGH!!! I can't be the only one that gets like this? I am a pretty easy-going person...but not lately. Hopefully things will start to change soon, because I can stand the person that is always talking in a sharp tone!!