Memory just popped into my head

[flashback1]

I'm sat at work having a conversation with colleagues and I suddenly get a flashback of someone (I think in a work context) telling me that no one likes me, no one wants to work with me and that I'm basically a horrible person.

I think this was from a time about 7/8 years ago, I don't remember it clearly but I know it happened. I've moved jobs since this.

But this memory has completely floored me. It's come out of nowhere and I feel like having a good cry! I feel like I'm losing the plot.

Please can someone talk some sense into me?

Have you any idea what triggered this memory ? It is horrible when you remember things like this.
Think of all the good things and times you have had since that person made the horrid remark. You now have a good ( I hope ) job and better friends . Try to forget this horrid person

Thank you - I've no idea where it came from. I think it's stuck with me most because it was my manager (at the time) who said it. I'm going to try to put it out of my mind, but it's really shaken me up