You want to grow, and the way to do it is to depend upon Him to walk with you and actually give you courage in the storms of life. Get so united to Him in your love for Him to allow the thing to occur naturally. Fruit naturally grows from a branch if it sticks to the vine. If you never tried it before, come and ask Him to forgive you. Come and begin to love Him.
Love relationships start out shallow.
But they grow deep. Turn away from all your thoughts that good deeds without any relationship-communion with God will have you to grow. Talk to Him everyday. Form a relationship with Him. I do not believe we need to settle with being more on fire in love for Jesus in our first few years than ever before.