According to Psychology Today, burnout is a state of chronic stress that leads to:
physical and emotional exhaustion - chronic fatigue, lack concentration, can't sleep, physical symptoms (dizziness, headache, various pains), depleted immune system, anxiety depression, loss of appetite
cynicism and detachment - no joy, pessimist attitude, want to isolate and or detach from others, lack of productivity and performance
feelings of ineffectiveness and lack of accomplishment - incomplete projects, longer to do lists .
If you are experiencing some of these symptoms take time to reduce the amount of stress in your life. Making a few little changes now may make a world of difference.
If needed, seek professional help.