Envy and Jealousy can be destructive and can prevent us from achieving happiness. However, we can overcome it by understanding what they are and what they push us to do.
Both of these feelings are not only about tangible objects- you can feel them in regards to intangible things as well: success, power, health, and love.
We only want more things if we are not happy with the things that we have. So the first step to overcoming envy or Jealousy is to become satisfied with what we have.