Welcome. Before I was an atheist I feared the idea a bit. I could go into many reasons why I would and even others fear it, bottom line, when you are born in and raised believing otherwise, the prospects are scary. For me I first became agnostic. Then an atheist friend told me "you know what agnostic is? an atheist without balls" we both laughed, but I was always concerned life on that side would be empty, dark, and sad.
Well... I had to become an atheist all the way, really accepting that, yes indeed this is it, and through some other life experiences I won't get into, I found that actually life (I only speak for me) was much more beautiful on this side. Much much happier, much more at peace, much more loving and tolerant.
Often to we put religion up against atheism as a opposite side, when it not really. Atheism is not a religion. one of the best ways I heard it described once, and even some atheist would say this is not true, but it was said like this;
"Lack of belief in a god, is not a CLAIM that there is no god"
You need to be allowed to not believe. I Claim there is no YHWH the desert god based on what I observe, but "god" could be a broad vague term, who knows, if Aliens landed tomorrow and said yea, we planted you @$$holes here a long time ago, well, we may have not believed that, but it would completely change our idea of reality. It would be new evidence of origin, what I am getting at is that Atheist strictly base their beliefs on evidence, and usually pretty conclusive evidence; ie I can't disprove god, but i also can't prove him, so why would I ever insist he exists??? I don't believe in him until I see him.
But coping, everyone is different I guess, for me the atheism side is beautiful. I love people more, I hold much more value on my time, I think little of my own suffering, pain or otherwise (no more persecution complex) I just take the beauty that is life and enjoy it. Atheists have everything to live for. Again just my thoughts but I hope it helps.
If you see it all the way through, you may go from coping with atheism to enjoying it