Phrases like Worship Service or Service of Worship are tautologies. To worship God means to serve him. Basically there are two ways to do it. One way is to do things for Him that He needs to have done - run errands for Him, carry messages for Him, fight on His side, feed His lambs, and so on. The other way is to do things for Him that you need to do - sing songs for Him, tell Him what's on your mind and in your heart, in general rejoice in Him.
Frederick BuechnerListen to your life. Listen to what happens to you because it is through what happens to you that God speaks...It's in language that's not always easy to decipher, but it's there powerfully, memorably, unforgettably.
Frederick BuechnerThe kind of work God usually calls you to is the kind of work (a) that you need most to do and (b) that the world most needs to have done....the place God calls you to is the place where your deep gladness and the world's deep hunger meet
Frederick Buechner