Pain, fear & doubt. Yes, even these states can be useful. They can come in handy. They tell you when you've walked into the flame. Or alert you to danger. Or make you pause and consider.
Think the opposite: Pleasure, fearlessness, certainty. These states can lead you off the cliff. They are the mark of the Holy Fool.
So yes, we are looking for a blending, a balance of these states. If we must experience pain, hopefully it's for a short time only. The fear will pass in the light of day. We have our doubts and maybe they make us re-think, adjust, reaffirm, recommit.