Can I just come back to this? Muswell asked "Is it acceptable for rational, skeptic, atheists to employ symbolism in their lives?"
I would say YES, because that is exactly how I employ it. I use some Buddhist symbolism, and whatever other symbols I fancy, as psychological tools. I'm perfectly aware of what I'm doing; I choose my symbols as I go along, making them up as often as I borrow from the world around me.
In 12-step programmes, here in Britain at least, it's made clear that the "higher power" represents the sense that one is not alone (addicts tend to feel that their substance/behaviour is their only friend.) Adopting the concept of a higher power allows you to switch out of the mindset that it's you against the world, making it possible to be more open and to accept support. I was one of the millions who swap the word 'god' for 'universe'. Many hardened alcoholics use an empty bottle as their symbol 
These days, I follow the principles of The Compassionate Mind, an amalgam of neuropsychology and buddhism, with the buddhism providing an appropriate set of ready-made symbols and principles. I have a Young Buddha carving as my "compassionate image" - a reminder - and use a buddhist forgiveness prayer when I'm feeling hateful. This doesn't mean I'm a buddhist, neither do I feel I'm praying to any entity outside myself. They're reflective tools.
I sometimes use the words soul and spirit, to represent the core of a person's psyche, character, and emotions. I don't believe people have some additional, non-physical self; the words are just widely-understood representations of a person's inner psychology. It annoys me when people say I'm 'spiritual' or even 'a good christian', because I'm neither of those things but it sparks the wrong discussion if I say so! A lot of religious followers assume no-one can be Good without following their religion - this is so glaringly untrue, it seems a remarkably unforgiving belief.