<human>: I'm sorry if this is not the right sub.

I've been disappointed a lot lately and the common denominator is me. So I feel like I'm the only one that can make these things better. 

* My boyfriend (LDR) had to cancel a trip in December that he had promised me; a trip that was supposed to be kind of a big deal; and my response is "I'm going to cancel MY trip in November so you know how it feels." -- even when this would disappoint me greatly because it would mean not seeing each other at all for a significant amount of time. 

* My friend asks me to keep buying things/spending money for her wedding ($2,000 so far) and my first response is "I'm never inviting her to my wedding!" (um- if I ever get married?)

* I have a friend who keeps canceling on me whenever we make plans. Every time. For 6 months. This weekend I showed up to a Halloween party alone because I knew she would be there. I text her to ask where she is. Not coming. My response is: "I'm never hanging out with you again."

Reddit, 

What the hell is wrong with me?

I know this isn't a traditional /r/relationships post. But just because I get disappointed, I shouldn't be plotting revenge, and yet THAT'S what I'm finding myself doing.

If there's any plus side: I don't follow through with anything. I never act on these feelings. They are feelings caused by resentment. But they blind me, they make me so upset. They make the disappointment spiral into something bigger, something more dramatic, something that would obviously end the relationship, whether romantic of a friendship.

Has anyone experienced this? Has anyone have any success in getting through and over these feelings? I don't want my first response to disappointment to be "I want to make you feel this bad, too." Because that's mean and I know it is and I don't want to do it, really; but I don't even want to THINK it.

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: This "eye for an eye" thing in my brain has to stop. It makes things more dramatic than they need to be. I want to allow myself to feel some peace and acceptance, and not jump to retaliation. =\