Worry, anxiety, extreme nervousness, negative anticipation, are all stressors to your body. The same stress hormones are released when we think stressful thoughts as they are when we are in a stressful situation.
These behaviors go on long enough and you will burn out. You will be fried. AAAAAAND if you are a stubborn driver personality like me, you will most likely end up burning your adrenal glands out. Let me tell you, that’s not fun. If you already feel burned out, foggy brained, extremely fatigued, have weight that won’t come off, then you already may have done some damage.