Resentment is bitterness that is in relation to the fact that you have not been treated fairly or that others are not doing enough for you. What can cause you to feel resentment:Feeling as if people are not listening to youFeeling taken advantage ofFeeling as if you are putting more into a relationship than the other partyNot being assertive and standing up for yourself How to know you are dealing with resentment:Lingering angerRecurring thoughtsFeeling regretful Long te...