My story is a typical fantasy plot line, where the protagonist finds out he has magical powers. Basically, he asks someone is explain to him what he really is. How do I make a cliche "those words changed his/her life" in first person? I mean, yeah, it's cliche. But I'm gonna run with it and see where it goes.
"Those words changed my life." That is the first person way of saying it. And yes, it is a cliche. There is almost no emotional content to it, because it has been used so often. It's also completely unnecessary, as I presume your story will show how those words changed your protagonist's life. Let the other person's word end the scene, or even the chapter. That will give the utterance the gravitas you seek. "You're a wizard, Larry."
Yeah, i Agree with Cog, don't go cliche, be creative, or even, put your own spin on a popular phrase.