Your faith in god or whatever spiritual being you believe in.
I copied this from another thread but this is how my faith in God has been affected by IF.
I am catholic but dealing with IF has definitely made me wonder about God's plan. Why is he making me wait? I still have faith that it will happen but at this time when I am childless, God is not on my good side right now. There were some darker times that I stopped going to church because God wasn't answering my prayers. I'm in a slightly better place so my faith is back. Though, sometimes I wonder if there's a reason why he's making me wait. Waiting for either adoption or maybe had we had a child other serious complications would have happened. Maybe God is saving us from that heart ache. (I don't know, that's what I tell myself, at least.) My faith in God is still there... but it's definitely less than what it was a few years ago.