New to this so sorry if it’s not in the right place or labelled correctly. 

I’ve made a big friend group at uni and we all live in student halls together. We make plans that often fall through and no one seems to mind but me. My friends have started to stay inside more and just sit about. This is all fine. We used to be much closer, spending everyday together. Even though it isn’t, I can’t help but take the change personally. 

I keep finding myself admiring them for a few days and then absolutely resenting them for a few more. I used to be able to push these feelings down but it’s getting hard to hide. I don’t want to lose them. I’m becoming so hateful and spiteful I’m not really sure what to do. I’ve told two of them about my diagnosis but I don’t think they take me seriously. I’m terrified of ruining these friendships. It’s a pattern I’m spotting, I make a friend and we become inseparable for months, I start to resent them, I feel like they’ve somehow wronged me and I get paranoid they’re talking about me behind my back.

So my question is, how do I tackle this in a healthy way? 

Note - I should probably add I was abusing cannabis for 3 years (daily use) and I’m now a week ‘clean’