I don't think that has much to do with a belief but more in the way you conduct yourself.
Every action is preceded by a thought.
What a person believes has everything thing to do with how they conduct themselves.
How a person conducts themselves demonstrates their beliefs whatever they may or may not express.
Well I and I'm sure plenty of other people who don't believe in gods know exactly how to conduct ourselves. In fact, I've overcome quite a few obstacles in my life. I'm not sad or depressed most of the time. I have a good relationship with my family. I live in a house and not in a dump. Lol. I go to work. I have a pet rabbit and I just live a regular boring life like anyone else.
I suspect your life would be greatly improved in every way if you would let go of all of that rancor and animosity towards religion that has been festering inside your brain like a terminal infection ever since you were a child.