It's no fun to feel envy or jealousy because both make you feel inadequate.
ENVY is a negative emotion that is felt by a person when that person wants what someone else has.
Jealousy is when a person is worried that he or she may lose what he or she has to some other person.
Thus, in the original meanings, JEALOUSY is distinct from ENVY, though the two terms have popularly become synonymous in the English language, with JEALOUSY now also taking on the definition originally used for envy alone.
The following video, 'How To Stop Being Jealous--Techniques To End Jealousy Forever' uses the word jealousy to include envy.