Zuckerberg posted his own comment in response , explaining that he fixates on a personal challenge each year ( in 2009 , he wore a tie every day ) , and this year 's is about animals and meat .
Dr. roese notes that regret can be damaging to mental health when a person fixates or ruminates on the missed opportunity .
罗斯博士注意到,当一个人对已经错过的机会念念不忘或反复思考时,由此产生的遗憾会损害到精神健康。
The divergence of moral and commercial values can be seen in some flemish paintings included here , such as marinus van reyerswaele 's " the money changer and his wife " , in which a couple fixates on their coins while their candle is snuffed out ( pictured ) .