To be disciplined is not about being punished. To be disciplined God's way is to teach us to let go of our understanding and learn about life from His point of view. To me, letting go of my understanding of life from the worlds viewpoint and learning God's ideas for how to live life to the fullest has been the hardest and still requires diligence while my understanding continues to grow.
A clue for us to recognize conviction from God, when we are in denial, is that we immediately want to justify and explain our position of being in the right. However, after the initial conviction, from God speaking to us internally or through another person, we begin to admit (at least to ourself) that we weren't as right as we were claiming to be, again at least to ourself.