For myself, although I was raised Catholic and attended Catholic Schools, by age 18 I rejected Christianity.
However, after doing my tour in the Marines, getting married and having our first child, things were not right in my life. The world seemed dark, so to speak. After watching TV Evangelist, Oral Roberts and doing what he suggested, pick up a Bible and read it, I decided that there had to be more and if Jesus was real, the only way to know was to go to him, and ask him to prove himself. I began to believe, but still had doubts to the point of having great anxiety about whether Jesus was real or not. So, the only way to have faith is to go to the source of faith, Jesus Christ, One sleepless night after tossing and turning, I prayed from the depth of my being, asking Jesus to come into my life. I surrendered all of my ideas and misplace beliefs to him. I promised to follow him, if only he would give me faith to do so. Suddenly, I was filled with a great light, from a being. This being gave me a sense of love, joy and all the sins I had committed over my life were erased, gone. I knew that this being was Jesus. After the experience I was left with so much love and joy, I wanted to go out into the streets and shout to everyone about the reality of Jesus Christ and how He was the source to transform humans into what God had in mind when he created us.
It turns out that my wife went through a similar experience the next morning while I was at work and before I had shared my experience.
Anyway, we gave our lives to Jesus Christ, returned to the Church and professed vows as Secular Order Discalced Carmelites, OCDS.
Our faith experience happened 37 years ago, and we never looked back.
I later came to learn through the Church, that faith is Godā;s revelation of himself to us, however that may happen.
Religion, is our response to that faith.
Jim