Yes, but only one person, maybe two, could do it.
Really, the only person who has a chance at single-handedly changing my mind would be my previous girlfriend. If she suddenly texted or called or messaged me that she missed me and she wanted to get back together, I would probably change my mind and be willing to fight again.
The maybe is for my first girlfriend. We always understood each other on a deeper level. I feel like if anyone could talk to me about this stuff it would be her. However, we're not really friends. We talk maybe once or twice a year at most. And she has no idea what's going on in my life. So there's no real chance of this happening. And, to be fair, the chance that she could actually change my mind in any way is very, very low.
I would welcome a random sweet and loving girl to comfort me though. Not in any way that could actually change my mind. But if there was some sweet girl around my age who wanted to, idk, come over to my place. Make some dinner together. Then lay in bed cuddling, watching a movie. Talking about some of the stuff I'm going through. I'd accept that help.
Not that that's likely... I have no idea who that person would even be.
Got that idea put into my mind because I was watching some videos where people talk about what their last day before their attempt was like. And I remember one person talking about trying to end things, then telling a female friend of theirs, the person then spending that evening baking cookies with them and holding them and letting them cry. I would welcome that for sure, even if I don't think it would do anything to change my mind.