Mid-life Crisis

Hello! I am a high school English teacher. I’ve been teaching for 6 years, and I feel like my job is becoming more difficult. Class sizes are increasing as well as my responsibilities. Pay hasn’t gone up, so I work a 2nd job to make ends meet. I know this is a concern for many other teachers, and while I feel proud of my profession, it’s November and I’m already burned out. I’m considering leaving teaching, but I literally have no idea what I’m even qualified to do. I hate feeling trapped. Any other teachers out there or people who get the feeling?