I had always been fine with the "God is everything" and "There is that of God in each of us" kinds of conceptions of God, but I was finding it hard to turn my will and my life over to a concept or The Universe; and I was being told that it would really help if I could learn to relate to God in a more personal way. I'd always struggled with the idea of a God personal to me. I'd always rejected anthropomorphizations as childish.
Then a wise spiritual friend I admired, Shana, made a suggestion. She came from a rural area where people drive everywhere, and she told me how, when she was learning this herself, she'd buckle the passenger seat of the car and talk to God as if he was sitting there. Though I lived in the city without a car, I'd spent plenty of years in car culture and this visual helped me with imagining how to approach praying in a conversational way.
And praying conversationally changed my conception of God. They fed each other. As I prayed "as if" God was a person in the room with me, I found it easier to feel comforted by God's presence. As I felt comforted by God's presence, it became easier to relate to God any time, anywhere -- to just stop in the midst of a situation and have a few words with God.
Of course, Christians have always had the person of Jesus to pray to, but I wasn't raised with any teaching in this area, so that idea was foreign to me. It may be easier to imagine for some. But even if you can easily relate to the idea of praying to God as a person, praying conversationally, and out loud, can still seem strange or silly.