A question to Christians, when did you experience God? Did he change your life forever and how?

I gave my life to the Lord many years ago. However, I constantly doubt him. I often feel like he is not there. I see some of my fellow Christians living his life and using him in their life to sort things out. I do too, but I have no feeling for it. It’s like a dead feeling in my heart. Even though He proves himself over and over. I guess what I am asking is, how do you keep him real in your life? Do you ever doubt Him? Did He completely change you and your life and in what ways? I really need to feel God in my life and there are things I want to change about me and my life. How can I do this?