I will lift up my eyes to the hills - from whence comes my help? My help comes from the Lord, who made heaven and earth. He will not allow your foot to be moved; He who keeps you will not slumber. Behold, He who keeps Israel shall neither slumber nor sleep. The Lord is your keeper; the Lord is your shade at your right hand. The sun shall not strike you by day, nor the moon by night. The Lord shall preserve you from all evil; He shall preserve your soul. The Lord shall preserve your going out and your coming in from this time forth, and even forevermore.
-Psalms 121

When you travel to a new place, don't you feel scared at times? I mean, you have no idea where everything is and you feel lost. Maybe you got a map or a friend to help you out, but nevertheless you still don't know the neighborhood your like home. In this psalm, David is saying that if he ever needs help, he knows that he can look up to God. You can do that too. Ask Him to guard you from all kinds of danger (also spiritually) and He will do it. What kind of God will let you get lost?