I like the lesson the original thread brought out. I have wondered how we can be sure that what we follow is from God and not from our flesh. I have heard people say "God told me", then they go on with something that scripture does not back up. Our flesh is greedy and sneaky in making its desires known. It seems to me that when we tell ourselves that we are lead by the spirit, we need to check ourselves carefully with written scripture. If it doesn't match, it isn't from the spirit of God.
I find that being honest with myself is very difficult and a lifelong work. I was once riding in an elevator with some men I did not admire, and was going over in my mind what I thought of them. I found myself telling myself "you are too nice to be thinking thoughts like this". So I actually did stop myself from judging.
Sometimes I think others are more aware of our failures than we are, we see ourselves with prejudice, others see us clearer. If we see ourselves with the mind of God, we can look at ourselves the clearest of all.