The angels already know how you feel, but they want you to pour out your heart to them, because then you are admitting your deepest fears to yourself. That way, it gets the demons - the angels don't use that word - so, rather, the negative energy out of you, helping you surrender it to God. A lot of us are afraid to tune into our deepest fears, but when you admit them to the angels there is this relief that actually helps you to be more effective and to more clearly hear your divine guidance.