Whether it's anger, jealousy, sadness or discontentment, there's nothing wrong with feeling a certain way.
不管是愤怒、嫉妒、悲伤还是不满,有某种特定的感觉是没有错的。
心理学小课堂
For example, envy and discontentment can signal that there's a need you're not satisfying for yourself and could be missing from your life.
例如,嫉妒和不满可能表明你的生活中有一种需求没有得到满足,它可能会消失。
英语百科
Contentment
(重定向自Discontentment)
Contentment is a mental or emotional state of satisfaction maybe drawn from being at ease in one's situation, body and mind. Colloquially speaking, contentment could be a state of having accepted one's situation and is a milder and more tentative form of happiness.