By the Holy Spirit

When God calls us out to do His plans for our lives, He requires us to have faith in Him to see us through. Learn how God’s plans for your life are impossible for you to achieve on your own strength and resources and how you need God and His Holy Spirit to fulfill your destiny. 

And I will ask the Father, and he will give you another advocate to help you and be with you forever— the Spirit of truth. The world cannot accept him, because it neither sees him nor knows him. But you know him, for he lives with you and will be in you.
John 14:16-17 (NIV)