What are your personal and professional goals? Does your current job help you achieve them? Whenever I felt burned out it was typically because I couldn't find any deeper meaning in my work.
Also, how many hours a day do you work? Don't assume others are coping just fine. It may look this from the outside, but you never know what's really going on. They'll likely say the same thing about you. A 2-hour commute is a red flag to me. There has been a bunch of research on how commute time has a strong influencing on work and life happiness.