I cant figure out why this happened see ? below?

I was in a rotten pissy mood but there was no need for me to be. My carpet got cleaned, my needs are all met, but I was nervous and upset today and snapped at my nephew and snapped at my husband. I am currently unemployed and I am trying so hard to get a job each day, what are good godly ways to stay out of a bad mood and just be happy? I never want to be in a bad mood ever again because it made me feel awful and I was mean to the ones I love. I like things safe and secure and life is not always like that. What do you do when you are in a bad mood? How do you get out of it?