Bitterness against against a parent

Do a little research and look into the lives of people who carry bitterness against a parent, an uncle or an old friend. Look at how it has affected their lives and then look at how the ones whom the bitterness is directed against have faired. Shockingly you will find that the ones whom all the venom is targeted against have hardly been affected and yet the bitter one you will find has been very badly affected.