adopt sb.’s good points and avoid his shortcomings
That is to say, they should know their merits and demerits and their choices must give play to their strengths whilst circumvent weaknesses.
He understood my strengths and weaknesses and how to make the most of the former and minimize the latter.
Drucker was a big proponent of accentuating a person’s strengths rather than managing their weaknesses.
扬长避短，汉语成语，拼音是yáng cháng bì duǎn。意思是发挥或发扬优点或有利条件，克服或回避缺点或不利条件。出自秦牧《漫记端木蕻良》.