I think spirituality is very different from religion. Religion in our times could mean a lot of things – a lot of BAD things – control, power, manipulation, blind-faith, biased, dogma, fear, brainwash, etc. My personal definition of organized religion is “a government for your soul”. I’m not saying that you are – but your question sort of suggests that you believe spirituality and religion are two of the same thing or at least intertwined in a way that is inseparable.
Spirituality to me goes beyond what Christianity, Judaism, Islam, Buddhism, Hinduism etc. has to say. I think there is something very valuable to be respected about all of them but they all eventually end up trying to consume your soul entirely – this is why I use them as only a reference guide to life and not so much follow them as set of rules that has to be followed in order for a life full of prosperity and enlightenment. I have a spirituality of my own that is composed of philosophy, religions, experiences, my own moral beliefs, etc. going on to explain it would take hours. Long story short, it is nameless; I dont call it anything nor do I read from any given book at any given time. I do believe that a higher power (I hesitate to use the word “God” because that would be drawing from the common Christian perception of God and what it’s like) exists but I simply believe that it’s beyond my/our comprehension.
Having said enough, if I began to tell you exactly HOW to define spirituality or what exactly you need to do in order to find your spirituality – I’d be doing nothing different than world religion and all of it’s evangelical practitioners. There is no right/wrong “way” of finding your spirituality, that’s all reliant of your own philosophies. I’m glad you’ve made the realization that being brought up Christian doesn’t necessarily make you a Christian – nor are you enslaved to Christianity – you have a mind, body and soul of your own.
My dictionary definition of “Spirituality” is this – “of, relating to, or affecting the human spirit or soul as opposed to material things….” I encourage you to either interpret that one on your own or create an entire definition yourself. It really is an open book, you write the pages.