他好像很有信心，实际上却没什么把握。

He seems confident but deep down he's quite insecure.

《牛津词典》

要有信心，把握自己的未来。

Have confidence, seize their own future.

youdao

这就是我们信心的源泉——响应上帝号召，去把握无常的命运。

This is the source of our confidence: the knowledge that God calls on us to shape an uncertain destiny.

youdao