When people hold onto resentment because of something minor – it shows far more of who they are as a person, than the person they resent.
Petty, immature people hold resentment and grudges for petty and minor things. They often want to pull the resented person down, because their resentment consumes them.
I’ve seen this happen, due to the work I do. People can hold resentment due to a difference of opinion, or because they don’t like to see people healing, or succeeding. So, they take out that inner anger they feel deep down about themselves, and project that onto others, who they perceive are doing better.
It is really sad, how resentful/grudge-holding people project their own inner issues, but I’ve seen it often. They have issues themselves, they cannot be honest about, or cannot handle, so in order to feel better about themselves, they need to pull others down.
It may give them a temporary feeling of satisfaction, but it will only be fleeting and they soon be back to feeling miserable about their own lives. It is a typically narcissistic attitude.
All you can do, is keep your distance from such people, have good boundaries, ignore them, and hope they can work out their own issues and begin to heal.
I prefer to be someone who has empathy, a conscience and wants people to heal, succeed. Which is why I have worked so hard to produce a website and this blog, plus social media. To reach out and help as many people as possible. It’s why I always advise people to seek therapy, because I want the best possible outcomes for everyone.