The Christian tradition, in comparison with the Asian spiritual traditions, seems to be rather thin in regards to the practice of meditation (or as the Christian tradition terms it, contemplation). But of course mystics appear in all traditions, and The Cloud of Unknowing, which Ravi refers to, appears to be written by a medieval mystic coaching a friend in contemplative practice. It's a gem! 

I found "it's not very interesting to say what I am against; always ask what am I for?" particularly apt.  When we are always looking for the fault a lot of energy is put into that.  Then the mind / body / heart closes, becomes small.  And, overephasising achievement and success makes us forget that a state of unknowing in which one does not know everything...is where we discover more, are surprised, and find delight in this new knowledge.  Thank you Ravi.