I think you should drop words like 'atheist' and 'spiritual' when you are trying to define yourself you know....they are just WORDS and not very helpful sometimes....we are a prisoner of language I think....do you know, in Norwegian there is a word for the feeling of delight and satisfaction a woman getsfrom breastfeeding. In English there is no such word. Mothers still feel that feeling but because there is no word for it they bury it/feel ashamed.
Norwegian mothers dont feel that way, the familiar word allows them to have that feeling. Language controls us to a huge degree and I dont feel the words 'spiritual' and 'atheist' are helping you at all, they are controlling your thinking by their very exsitance...the tyranny of language!
You dont need an excersise in moral reasonning to be a 'good' person....just be you...a work in progress...you know what is right and what is wrong...we all have our own personal moral code which we constantly shape and change, isnt it??
love,clancxx