I could make a long post cataloging all the trials and curious predicaments that go along with being a young person and a practicing Catholic who is 100% faithful to the Magisterium, (particularly for the odd case such as myself, who is an atheist convert with no Catholic family to speak of, which goes contrary to the way that the faith is normally passed on through family, schooling and tight-night communities) but really, I’ll just get down to it and you can guess what I mean by that:
Why shouldn’t I just live as a practical atheist for the next 10 years?
Odds are I won’t die before I’m 35, and I’ve got an eternity to get closer to God anyways. It just seems it would be a lot easier to be a practical atheist, in employment, dating, socializing, sex, than it is for someone such as myself, an atheist convert with no Catholic family or circle of friends (which usually form in elementary school anyway).
I guess I’ve found it difficult and not tried, but just for a while.
But then again, so have about 99% of other people my age according to this book, summarized in the video below:
amazon.com/gp/product/B00HWWPAXG
youtube.com/watch?v=myGzvGCgnsc
Thoughts?
Here’s a different perspective for you.
Let’s say that tomorrow, you meet the girl of your dreams. I mean, she has
everything: she’s stunningly beautiful outside, has a heart full of love, kindness, and dreams inside. You both laugh at the same things, enjoy the same hobbies, read the same books. After six months to a year, you decide to propose. You set it all up, you secretly talk to her best friend to find out what kind of ring this girl would like, you get a reservation at her favorite restaurant. Finally, after a perfect evening, you pop the question…and she says yes!
But after you two kiss, hug, and cry from happiness, she says, “but I don’t want to marry you for ten years or so, and in that time, I’m going to see other men and sleep with a lot of them.”
You’re stunned, to say the least.
“What? I thought you loved me!”
“Oh, I do. But it’s really hard to build a marriage, and I don’t want to put that work in right now. It’s a lot easier to sleep around and party all the time, and way more fun than keeping house, changing diapers, working through the inevitable difficulties that occur in any marriage, and using NFP when we have to. I want ten more years of fun before I have to deal with that.”
You’d be pretty unhappy, no?
Now consider that God loves you much, much more than you could ever love the girl of your dreams. The situation you describe is quite analogous to the one above: “I love You, God, but loving You can be really difficult sometimes. I’ll start building a life with You in ten years.”
Furthermore, if your vocation is indeed to marriage, you’d be treating your future wife in a similar way to the scenario I described above. “Well, honey, I wanted to wait for you, but it was hard, so I’m sure you don’t mind that I slept around for the ten years before I met you. Yeah, I know you’re special, but it’s hard to be young and not having sex.”
And all of that is leaving aside the perspective from which such a person would be looking at the women with whom he’s sleeping: “You’re really hot, and I want to sleep with you, but I have no interest in building a life with you. I’m only interested in how much fun we can have in the next few hours.”
I’m not trying to give you a rough time here.

I know it’s hard. I left home at 18 and never went back. My parents brought me up as a Catholic, but they did so in a home full of abuse. I held onto my faith, but barely because it was very difficult to make the distinction between the faith my parents practiced (missing Mass on Sunday is inexcusable, but getting drunk and beating your kid is fine) and the faith the Church teaches.
Incidentally, I had no friends from elementary school; the ones I have I met in college or afterwards. Keep an eye out for other young people at Mass; walk up to them, introduce yourself, and after talking for a bit, suggest that you all go out to a diner for breakfast/brunch: “Hey, I was thinking of going to The Diner for breakfast; their chicken-fried-steak is really good! Want to join me, and we can keep talking there?”
Also, I second the recommendation by jmr_1985 of “He Leadeth Me.” Great book!