There is a humbleness that came with the realization. Both in terms of accepting who I was, and accepting what death was. In a free society, people tell you to be yourself, and there is definitely a stress that exists for closeted atheists (or closeted anyone). So, when I had to admit what I was, not just to the people around me, but to myself, it was like lifting a weight off my shoulders. There are still times where I feel the need to defend my viewpoints, but at least now I can do it knowing that it is who I am.
And, in regards to death, I felt it has helped me accept it better. It's easy to fear death, as it marks the end of this life you've lived. But the concept of eternity was arguably more frightening to me. I mean, the thought of existing, in any form, forever, is hard for us to imagine. So adding judgmental demons and angels to that eternity just made it that much more stressful.
Thinking of death like the time before we were born (of which we have no knowledge) has helped me understand it. When I do die, I won't have the capacity to be sad about it, or the capacity to even be aware of it. Billions of years can pass by and I won't be any worse off. That obliteration of existence might seem sad to a human mind, but it's really the only merciful way to go.