If someone stands pat on something, they stick firmly to their position or opinions. Further, standing pat refers to refusing to abandon a belief or decision. It is chiefly used in American English. Pat本身的含义是指轻拍, stand pat on something就是指坚持自己的位置或者想法不动摇，演变而来的名词形式standing pat就是指放弃改变，保持原样。这个表达比较多用于美语中。

Examples:

But our time of standing pat, of protecting narrow interests and putting off unpleasant decisions — that time has surely passed. (by Obama)但是，墨守成规、保护狭隘利益以及对艰难决定犹豫不决的时代已经过去了。

The restaurant hasn’t improved its service. The food is standing pat—too salty. 餐馆还是没有改进服务。食物还是老样子——太咸了。

my life is standing pat

I don't like standing pat,because we will be dump by this world which go on making progressif you don't advance with the times

my dull work is standing pat

only make me older easily