Your earthly father is the father of your body. You inherit some likeness of his physical features. Likewise, God is the father of your spirit, and you inherit from him divine attributes and potential.
We are sons and daughters of a living God, in whose image we have been created. Think of that: created in the image of God. We cannot sincerely hold this conviction without experiencing a profound new sense of strength and power. - Thomas S. Monson, “Canaries with Gray on Their Wings,” Liahona, June 2010, 4–6
We receive love and inspiration from both our earthly and heavenly fathers. They provide for us and guide us to become all that we are destined to become. The video below tells the story of a man who provides for and loves his family like a father indeed.
You can know for yourself that God is real, that he is your father, that he knows you and loves you personally, and that he will guide you home to live again with him someday. He will let you know this as you reach out to him in faith.