When you are struggling to achieve something important you should believe in yourself and be sure that your decision is the best.

当你在努力实现一些重要的事情时，你应该相信自己，相信你的决定是最好的。

youdao

When you look at this tiny egg, it's hard to believe that in a few days, it will become something completely different.

当你看着这颗小小的鸡蛋，很难相信，几天后它将会变得完全不一样。

youdao

If you really need something to believe in, then believe in your own potential.

如果你确实需要有什么东西去相信，那么就相信自己的潜能吧。

youdao

Let's suppose that in order to believe in something, you've got to be able to picture it.

让我们先假设要相信一件事，这件事必须是可以被想象的。

耶鲁公开课 - 死亡课程节选

I think probably we shouldn't believe the theory of belief which says that in order to believe in something, you've got to be able to picture it or believe it.

我觉得我们不能相信下面这种理论,如果要相信一件事情，这件事情必须能够被想象出来。

耶鲁公开课 - 死亡课程节选

It's something I happen to believe in myself and I've always voted for as an MP and you will see the proposals in due course.

BBC: Transcript of George Osborne interview

It's also reassuring to know that a majority of French adults believe there's something to be said for instructing children in the need for personal initiative and responsibility, regardless of excuses or circumstances.

WSJ: Review & Outlook: France to Ban Homework. Really.

What does it mean to believe in something that's larger than yourself when you're just starting your life?

NPR: Battling Back from Breast Cancer