I sometimes miss davening. Not the praying to an invisible God, nor the mandatory aspect of it, but I miss the intense concentration and meditation. I felt like I was delving deep into myself and simultaneously drawing closer to what I thought of as God. That part was lovely; it helped me reach self-knowledge, it brought me to a self-centered place, it enabled me to focus. Even after I stopped believing that the Torah is divine, I would talk to "God" intensely, just talk. That was great. Then I realized that God almost definitely wasn't there, and I stopped talking to myself.
Maybe I'll look into meditation. Or maybe I'll just resume talking to myself. It was easier when I thought I was talking to another being, though. Now I just feel crazy, except that it's crazier to talk to yourself and believe you're speaking to an invisible being than it is to just talk to yourself, fully knowing what you're doing. ;) Maybe I'm not so crazy, after all.