Retail is such a stressful environment. I was an assistant manager in a store that kept track of everyones' personal sales and store sales as a whole. They would call you out on shortcomings every week and sometimes daily. It was so stressful that I left. After moving, retail was all I could find but I refused a sales position and went with a support position that allows me to work by myself for the most part and decide what tasks I do and when I do them. It is incredibly stressful to be outgoing and engaging with customers all day if you aren't naturally inclined. Stress is my biggest trigger. Stepping away from sales helped me. The best job I ever had was one where I got to give back to others, all of my stress just melted away. I hope you can find what works for you.