<human>: Give me the gist of the text in a nutshell

Up until last year, I had a very close group of friends, but they've shut me out. I struggled with some difficult things this past year, and instead of showing me any support or understanding (like I'd always done for them), I was pretty much ostracized.

It was really difficult to deal with that on top of everything else I was going through. Recently, things have started to get better for me. Ever since I met these friends in college, I've been talking about my dream grad school program. I applied, got in, and am very excited to start classes next week. 

But when I told them about this, that something really great was finally happening with me after all the rough stuff from before, no one cared. No congratulations, no acknowledgment, nothing.

I know I shouldn't care about this based on how they've treated me and that I should go find some new friends, but I haven't been able to shake how upset and hurt I am by this. It's hard to focus on improving when the people who are supposed to care about you almost seem like they're rooting against you. It's really messed with my sense of self-worth.

How do you deal with a situation like this? I think I should look into making some different friends, but how do I handle the sadness from them not caring? I appreciate any advice or shared experiences!!
<bot>: Friends have been unsupportive to me through both the bad times and more recently, the good times. How can I stop focusing on the ways they've made me feel worthless?