I've been struggling with anxiety and depression for a few years now. After some severe, abusive actions I realized the "friends" I surrounded my self were a major part of my problems. So, last weekend I told them to get lost.
This week has been great! I feel awesome. It's like a tremendous weight has been lifted. I never realized how toxic these "friends" had become. I think it progressed over the years slowly and I just never noticed.
First, sorry about your anxiety and depression and hope you find ways to get better. Dumping bad relationships can only help!
When I am having doubts about a friendship (especially long-term ones), I ask myself "If I didn't know that person and just met them today, do I think we'd become friends?" If the answer is no, they are gone. Only had to do that 4-5 times. Never regretted it.
