The heart and my soul drive me into a conscious sate of well being. In life one must believe in a spiritual manner to improve his awareness of his life. To live spiritually is to give in to a higher power greater than ones self. It can be done, with effort. Therefor , your question will bring many answers as we all believe in either ourselves or our spiritual powers that are God given.
"Never separate your mind from your heart when making relationship decisions. The purpose of the mind is to protect the heart." A mature person relies on the combination "gut feelings", logic. lessons and learned from past experiences before making decisions.
I like to think I'm ruled by my head, always thinking of raising/winning the money to buy myself another Land Rover that's worth having (that's the head bit, the 'heart' part is wanting to get back up to the wilds of Yorkshire, which you can't do very well by public transport). Last time round I must have been thinking with my backside, as I bought a 'pup' (it wouldn't pass its MoT -Ministry of Transport vehicle fitness test due to deterioration of the underseal). I'd been given a nice 'wedge' of cash from the insurers from the theft of my old 'Landie' but had to fork out a bit over half of it for work on the (house) roof. Not a good year, 2012! Will '13 be any better?