“在你的不足上多下功夫”英语怎么说

这句语境是老师给学生建议之类的：
Work harder on your disadvantages.

这句语境是告诫别人别多管闲事的：
Focus your effort on your own disadvantages.

在你的不足上多下功夫
focus the effort on your weak points

Make efforts on your shortage!

Less than in the more you work hard.

你可以下载金山词霸，很好用的~~

work harder on your weakness(es)

Make more efforts on the things you are not good at~~~~