I spent 8 years flying after pilot training. 3 years as a T-38 instructor and 5 years in the A-10. I was burned out the entire time, until my last year in. Once I had realized I was getting out, I only did my primary job of teaching and scheduling and chaffed the rest of it. You'll soon find out that 75% of your job is "make work" to keep up with the careerists.