I think Rav Weinberger is really onto something. Without feeling it and bringing it into our physical reality it's not real, it's just a concept , an idea, a thought. But you must FEEL the ONE-ness in order to spread it. May we all come to be that shining light of G-d unto ourselves, eachother and unto all the other nations. Our relationship to Hashem is unique and individual.
Spirituality is an emotion a feeling.
The doing and thinking of commandments produces spirituality. Doing impacts on feelings to a much greater extent than thinking and the both together have the greatest impact. The other thing I do is to listen to music or sing - usually something from the siddur, something meaningful. It gets me feeling more connected. Once I get going, it's a little easier to keep the connectedness going.