Life, Truth and Mystery - does it ever stop?!

So the aim of life is to get over yourself and help someone else? What if it was the search for truth? Then can you be satisfied with following your heart instead of your mind? 'Cos how trustworthy is this heart anyway? I've grown up inside church walls but a search for The Truth (the one and only, yes) drove me out (although not entirely away from a belief in God). But really, can this great mystery never be solved? -I really need to know!