I remember, as a new disciple, I would spend hours upon hours in prayer and singing hymns in praise and worshipto the Lord.
As a pianist, I would sit at the piano and play songs from the hymnbook and sing to the Lord prophetically. It was an awesome time. It was during those times that I felt the presence of God very strongly. I don't know if you've had a similar experience, but praising and worshipping the Lord invites the presence of God where you are.
Look at this scripture here: 3 But thou art holy, O thou that inhabitest the praises of Israel. 4 Our fathers trusted in thee: they trusted, and thou didst deliver them. 5 They cried unto thee, and were delivered: they trusted in thee, and were not confounded. (Psalm 22:3) Did you see that? I highlighted it there just in case :)
I know this isn't a teaching section of the site, but I pray that you've learned something very powerful about God - He loves when we honor Him with the sacrifice of praise, and with worship!
As a well-loved hymn of The Church, and found, most likely, in your most loved hymnal, this hymn and its tune inspire you to search deeper; encouraging you to give the Lord a greater role in your life. May hymns like Be Thou My Vision bring you closer to the Lord. These great songs of The Church certainly have a way of doing just that.
The words to Be Thou My Vision were attributed to Dallan Forgaill in the 6th or 8th century, and the music is based on an old Irish folk tune.