I feel like I am stuck in a negative thought loop, please help me.

Recently, I have a friendship which went bad, because this friend/roommate insulted me many times, which made me hate him inside my mind.

Initially I just let go because I can deal with insults and I did respond to those insults to show my attitude and I didn't want to make it awkward since I am still living there, though I quickly found a new place and moved away.

However, after I moved out of the house, I start to feel really bad about this whole experience, I feel like I really hate this person greatly. So great that I resent this person and I want him out of my life.

However, here is where the problem is...

Before I left the house, some talk happened between me and him, where he commented on my weight and said something similar to I should lose weight, he also bragged about how he is learning skills and getting confident about finding a new job.

These comments triggered me, I admit I probably got sensitive, I've always wanted to lose weight and start learning skills, but I procrastinated and didn't actually start. I thought to myself I'd start after I move to the new place.

However, I am not stuck in a negative thought loop, I give myself this thought: "If I start losing weight, learning new skills, doesn't it mean I got influenced by this person I hate? But I resent him very much, I want him out of my life, if I am influenced by him, then I can't get him out of my life..."

So, now I feel real bad because I feel like I am stuck, if I do what I wanted to do, I get worried that I am influenced by him, if I don't do what I wanted to do, I can't improve my life...

I see from outsiders' perspective, this all sounds a bit crazy, I don't know why I am stuck in this thought pattern...I am also afraid of seeking professional help, because I didn't seek help before, so I feel if I seek help, then I am again influenced by him.

It's a very shitty experience, I feel maybe I am trying to erase things that has happened, however, due to my resentment I am experiencing this feeling.

I just feel so bad, I wanted to lose weight and learn skills, it's all a part of my plan, why does this person has to say things to bother me like this, I've always respected him and tolerated the insults, I was finally going to kick him out of my life, and he says those things.

I just want to live my life peacefully and pursue my goals and be happy.

I'm hoping maybe other people here also experienced resentment against unsolicited advice provided by people you hate, maybe can share their method of dealing with this.