如果对一件事是a bee in your bonnet, 即没完没了地想这件事儿

Do you like hot and spicy food? You must know what this is.

To go it alone 可形容一个人做事情自己做，没有其他人的帮忙，单干。

Full steam ahead 意思是充满信心地和精力饱满地全速前进。