Yoko Ono has written a collection of instructions to the universe,i won't try to define her spiritual currents/below are my thoughts on the matter of spiritual development:
train your mind to control your thoughts. rid yourself of constant worry. what is your motivation. treat yourself to honesty. tell yourself only the truth. if you fall in love with someone research the definition of love-fast for a few days,pray constantly. train yourself to think like a spirit,the spirit that you are. you are not a human,you are a soul thoughtfully placed inside a body,a shell that is temporary. treat this shell as though you are borrowing it,as if it is not your own,the creator has lent it to you. imagine the word pure. rest. drink some water. care for your brothers spirit.