>>824551
First of all, OP, it's hard not to underestimate this advice >>824751
Talk to your priest. He's an expert on the topic you're asking about. He dedicates his life to spiritual fulfillment. He's not a judge; many people don't want to talk to priest cause they think they'll be judged. Don't worry, they're used to all kinds of sin and heresies, and they love to help others. Your local church is probably walking distance from your home, so go talk to the priest.
Now, back to your first post. I was once in your shoes, trying desperately to get into the occult to inject some meaning into my life, which I desperately needed. Intellectually, I believed there was one God. But I was never able to fully get into the gnostic stuff, much less into "chaos magic(k)", which seemed to me as a bunch of edgy LARPers looking for cheap ways to justify their sex addiction. Ultimately, devoid of any meaning, in went down into a two year long depression.
Ultimately, there was some part of me that became sick of being down, that kind of rebelled. I knew I could not life depressed, and I knew I was too much of a coward to kill myself, so I had no option but to bounce back. I started ordering my life, trying to get some self control. My life was shitty, so mindless repetitive tasks were alright with me, unable to bring me further down than I already was. And they had the upside of building up some discipline. I cleaned up my desk from shit that had been sitting there for months, organized my library by subjects, emptied my drawers of all the crap, tidied up my computer files and got into control my excessive masturbation habits. It's something one could easily do in a weekend, or just an afternoon, but it took me months. However, if you want to search for some ultimate meaning, you have to pull yourself together first. You cannot orient yourself towards anything if your a wreck, scattered away by the winds.
Once that's out of the way, pray. Another piece of advice that's often given, and often underestimated. You have to live your faith, live according to that ultimate meaning. Take Pascal's wager: intellectually you believe, but you do not live as if there's a God, you carry on with your mundane way of life. Imitate those who you consider holier, closer to God, than you. "Ultimate meaning" is not just some food for thought, it's a directing principle of your whole self. Live it out.