英语翻译Dwelling on the impossible leads to a sence of inadequac

英语翻译
Dwelling on the impossible leads to a sence of inadequacy,and even feelings of envy,or jealousy.We are self-destructive when we envy a student who gets better grades.
这句话里的dwell是作“老是想着、想着”的意思，不是作“居住”的意思。
刚刚一直想不通impossible在此处该如何翻译，查了一下英英字典，里面有解释：
Something that is "impossible" cannot be done or cannot happen.
"The impossible" is something which is impossible.
其中"The impossible"做名词用，表示不可能发生的事情。
受教了。当然也要感谢一、二楼的朋友的热心帮助。