in solving the difficulties ,what really-is our courage and

what counts是从句
That's what counts 是全句,可将what really counts 当做固定搭配来记住.
And that last ounce is what really counts .最后一盎司才是真正的价值所在.
Require：需要（技能、资格）、要求、命令、规定（表示某些事件一定要实行和发生,带有强迫意味的.） eg.They required of me to appear.有关当局要求我亲自出面.
need 表示一般普通的需求、需要（没有强调这些需要一定要满足或实现）
例如一个短语：all that I need （我所需）