The self-discipline required to drag myself out of bed eleven minutes earlier than usual was considerable
为了比平时早11分钟起床，所需要的自律是相当大的

我去买面包需要钱。所以钱是【被】需要的。

我去打仗需要勇气。所以勇气是被需要的

required (by someone/oneself/somebody)
discipline发不出require的动作

我觉得这里没有动作发出者，没有by
柯林斯词典： If you require something or if something is required, you need it or it is necessary.
拆成简单句应该是：
Self-discipline is required （to drag myself out of bed eleven minutes earlier than usual）.
That self-discipline was considerable.