46 years ago, attending a campus fellowship group I hadn't intended to go to (but was too embarrassed to leave), I ended up praying to ask Jesus Christ to forgive me and come into my life. I was astounded by the sense of peace that I felt for the next hour or two. But the feeling faded, and the next morning I wondered what on earth I had done.
In those first few hours, I see a pattern I've seen many times since. God is surprisingly powerful and active, but also surprisingly subtle. Sometimes he shows his power, sometimes he does not, and you have to remember what you have seen of it.