The Lord has loved you into being, and even before the moment of your conception has had a plan for your life. God the Father has created you for some specific mission, and wants to reveal it to you.
The Venerable John Henry Cardinal Newman wrote, “God has created me to do him some definite service; He has committed some work to me which he has not committed to another. I have my mission… He has not created me for naught. I shall do good, I shall do His work; I shall be an angel of peace, a preacher of truth in my own place, while not intending it, if I do but keep His commandments and serve Him in my calling.”
Jesus loves us so much that He invites us to help Him save the world. He alone is the Savior, but He opens up His life to us that we too may share in this work. So the first step in discerning your vocation is to understand that God has created you out of love and in His love invites you to share in His work of salvation.