Think about how many times you walk out of your front door. School. The park. The shop. Your grandmother's house. You do it without thinking — grab your shoes, open the door, gone.
The Prophet ﷺ taught us something to say in that exact moment. It takes about ten seconds. And the promise attached to it is enormous.
Look at what you just said, piece by piece.
"Bismillah" — I am not starting this on my own. Whatever is out there today, I go in Allah's name.
"Tawakkaltu 'alallah" — I am handing the worrying part to Allah. I will still do my best. But I am not carrying the whole world on my shoulders, because I do not have to.
"Wa la hawla wa la quwwata illa billah" — this one is the biggest. It means I have no power at all, except what Allah gives me. Not the strength in your legs, not the ideas in your head, not your ability to be brave — none of it is yours. It is all borrowed from Allah, and He is happy to keep giving it.
Now here is the promise. The Prophet ﷺ said that when someone says this as they leave their house, it is said to him:
"You are guided. You are protected. You are defended."
Three things, for ten seconds of words. Guided — you will be shown the right way. Protected — you are looked after. Defended — something is on your side.
And the Prophet ﷺ added one more thing: the shaytan turns away from that person. He backs off, because there is nothing for him to do with someone who just handed everything to Allah.
This dua is a tiny lesson in tawakkul — trusting Allah. Notice that it does not say "I will not bother trying." You still put your shoes on. You still walk to school. You still do your best when you get there. Trusting Allah means doing your part and letting Him carry the part you were never strong enough to carry anyway. Ten seconds at the door, and you go out lighter than you came.
From Sunan Abi Dawud and Jami at-Tirmidhi, from the hadith of Anas ibn Malik (may Allah be pleased with him).