A lot of different religious groups will give you all sorts of ways to know whether or not you have the Holy Spirit. Jesus has one simple answer: "by their fruit you will know them." Paul gives us the definition of holy fruit — LOVE, JOY, PEACE, PATIENCE, KINDNESS, GOODNESS, FAITHFULNESS, GENTLENESS, SELF-CONTROL. Now why not repeat them out loud and ask the Lord to make this fruit yours in full measure?