What Causes Frequent Mood Swings, High Irritation Levels And Low Confidence?

My mood is swing very frequently and iritation level is very high every time i scold my kids and confidence level is zero I don t want to meat people and on the time I think what people think about me my mind will not calm every time something going in my mind and I think all are happy but I m sad For this reason my family life is not going smoothly