Sometimes the hardest cases are the ones closest to home.
"You can't go back and change the beginning, but you can start where you are and change the ending."
出自汉·桓宽《盐铁论·申韩》。善于治理国家的人,一发现弊病就立即补救,一看到漏洞就立即堵塞。
The value of a mental process lies in its utility for the organism's adjustment to life.