exhausted, bursting, exploding...

I have been really exhausted lately because of my work. My job is stressful as it deals with customer service. I encounter rude and grumpy customers everyday. And it ruins my day. Sometimes, I feel like to explode and burst. I can't talk back to customers because I need my job. I was glad to make a decision to resign from my job. Tomorrow is my last day. I will be very glad when it's over. I can hardly wait! Sigh!!