We relive the pain over and over, letting them live rent-free in our head and we have a hard time letting go.

我们一次又一次地经历痛苦，让它们在脑海里自由浮现，对此难以释怀。
Reliving pain and getting depressed is what Thanksgiving's all about.
讲嘛，重温悲惨的回忆 是感恩节的精神

get depressed 变得沮丧
I'd get depressed and gain10 pounds every winter and lose them again in the spring.

我每个冬天会变得抑郁，增重十磅，然后再在春天减掉这些体重。
You sometimes feel anxious, but you don't often get depressed.

你很自信，虽然不时有些焦虑，但却很少沮丧。