If you feel jealous of another person, then such dream could be a reflection of your waking life. Perhaps you feel jealous for that certain person, because of the features he has got and you dont. On the other hand, the jealousy in dreams could be interpreted as the shyness and the lack of confidence. Perhaps you do not feel worthy anything good and positive in this life. Do not be so hard on yourself.
Read more about dreaming of Jealousy in other dream meanings interpretations.