我为别人花费了很多时间和精力却未能给自己一样多的时间，由于联想到自己我就特别地沮丧。

I was spending a lot of time and energy for other people and not spending nearly as much time for myself. It was frustrating especially since I brought it upon myself.

youdao

spent a lot of time and effort kind of figuring out what is it that people will want to buy next week.

他花费了很多的时间和精力来研究,人们想要在下个星期买进什么。

耶鲁公开课 - 金融市场课程节选