Are there any Christians whose life was changed by God?

I would like only Christians to answer, no funny person with a sarcastic and 'witty' comment. I am going through a rough patch at the moment and I would appreciate some amazing stories to remind of God's great love. I will give you an example, I am 13 years old, and this year I went to Spring Harvest at Minehead, if you haven't heard of SH look it up and book for this year, it is fantastic, I was in my group and me and two of my friends were getting prayed for in a big group for people who felt lonely at school because they are the only Christian. One of my friends is an amazing Christian. The other was forced to go to the groups and only came to the prayer thing as they didn't want to sit alone. I started crying as I thought of all the times I had felt lonely, so me and my two friends went to have a private prayer. Then half way through the prayer my non-christian friend started crying, she told me that the holy spirit had come to her and she felt so happy she just started crying, now we pray together each week and she can't wait to go to SH next year! God really changed her life that night, and in turn she has changed mine. Any other examples or encouragement?