I think when most people talk about "finding God", they mean that they had a moment or an epiphany where they realize there's more to life than just what you see with your eyes, what you hear with your ears, what you taste with your tongue, and what you feel with your hands. I don't mean that you merely grasp this intellectually, but you grasp this at a deeper, more spiritual level. It's one thing to merely intellectually acknowledge that there might be a god, a divine creator of some sort, etc. But it's another thing entirely when the full realization really hits you in the heart and you acknowledge the harsh truth: that we are imperfect, that we are fallen beings, that we were made for a greater world than what we've acknowledged is out there. And from this, we acknowledge that God is real, not just as this vague, half-remembered from childhood concept, but a very real, existing entity.
At least, that's what I experienced briefly before I became a Christian. I was formerly an atheist until late in high school, but I could notice that something was changing in me. It might be worthwhile having a talk with the priest or pastor of your church; he might have some really good guidance for you.