Trust.

“But perhaps you hate a thing and it is good for you; and perhaps you love a thing and it is bad for you. And Allah Knows, while you know not.” [Al - Baqarah 2:216]

"...it was said that fighting in the way of Allah subhanahu wa ta’ala may obviously appear to be a loss of life and property, yet the time will come when realities will be unveiled and we shall find out that this loss was no loss, instead, it was the ultimate in gain, and a source of eternal peace."


Source: https://versebyversequranstudycircle.wordpress.com/2016/02/08/perhaps-you-love-a-thing-and-it-is-bad-for-you/