"I am envious and full of hatred that you have got what I desire but cannot get"
AS WITHIN, SO WITHOUT.
Jealousy may become bitterness.
When we become damaged, when we get hurt by life, when our heart and our dreams are broken, how easy it is to become soured, bitter, blaming, and resentful.
We shut down our love, we become self-obsessed (egotistical), and we eventually project our bitterness onto other people: family, friends, work colleagues, and others.
The rule of bitterness states; "I was prevented from having it, so I don't see why others should have it (experience something)."
Until we heal our pain, until we heal our hearts, until we realize that we can help to bring happiness into other people's lives, then we will remain bitter - projecting our inner pain onto the outer world.
BITTERNESS IN PARENTS WILL DAMAGE THE CHILDREN.
When we are parents and we are bitter, then we unconsciously begin to damage our children. We are still running the rule of bitterness and we prevent them from growing up into lovely, intelligent, creative, confident, and holistically healthy adults.
If we are bitter, then we transfer our poisons to our children.
This is called "negative conditioning."