perception of anything can act as motivation or discouragement. if we perceive that the thing in front of ur good for us...we will surely go for it. no matter what the real situation is, and in the very same way.we we have a strong perception what stood in front of us is not gud, no matter how beneficial it is , we will never turn our faces to it.
according to me reality is reveled only through perception.perception is the driving force. and who know what is termed as reality is perception again.😉