Hi @amandajro.
It's difficult for me to pinpoint a cause, because I don't see any meaningful one.
It is true that I feel more confident about my decision to cut some bonds but I'm far from peace of mind, as these people weren't the main cause that I feel depressed and anxious for.
In fact I'm not feeling any less depressed or anxious than in the past. It seems that only my sleep has improved.
In any case, I'll think about it more in these days, perhaps talk to my therapist, and if I happen to have a clearer picture, I'll share it in my next update.

Something I forgot to write in my previous comment is that I've even been able to take naps during the day lately. I even seem to naturally wake up after one hour or two, without the need to set off an alarm. The last time I was able to take naps successfully was about 7 years ago, right before I'd quickly fall into depression.