Sri Sri Ravi Shankar:
You are made up of matter and spirit.
Our body is made up of amino acids, carbohydrates, proteins, etc. Your spirit is made up of love, compassion, peace, generosity, commitment, caring, intelligence, responsibility, happiness.
These are all the nature of spirit.
That which enhances the spirit of enquiry, commitment and compassion in you is what spirituality is. Your connection to the universe is spirituality.
If you go to the root of every religion, this is what it says.
In Christianity Jesus said, Love is God and God is Love.
In Hinduisum it is said ‘Asti, Bhati, Preeti.’ Preeti (love) is the nature of God.
Islam talks about peace, commitment, compassion and giving.
So the forms are different but the substance is the same. Holding to the true substance is what spirituality is. And you can do that by going in deep meditation.
What words you use to pray is secondary. What state of being you are in is most important. If you have that soft, inner beautiful feeling, then you are spiritual. Otherwise you may be a priest somewhere, very hard inside but you are not spiritual.
You may go to a temple or church and bow down many times, it means nothing!
But if you are walking in the street with an uplifted feeling, then you are close to God. The more you smile the closer you are to the Divinity.