NSFW: I’m losing people

I’ve been in therapy for over a year. It was one of the best decisions I’ve ever made for myself. I have adhd/(quiet) bpd with some autistic traits. Getting diagnosed was a relief. I am West African. On this side of the world therapy isn’t as popular as it should be. I got help and I’ve been putting in the work. I talk to others about therapy and encourage them to visit them to get checked up as well. Look, I’ve been through shit. A lot of it. I grew up in a home that had physical, verbal, and financial abuse. I grew up in a home where I never felt wanted. I’ve dated a string of selfish people, had a terrible boss who was sexually harassing me until I reported him to the Ethics committee in my workplace. I have since quit said job and I’m currently taking career-boosting courses as I await my admissions into graduate school. I live with my older brother now in the city I originally grew up in. This city has friends I’ve made over the years. My brother is 29 dating someone 10 years younger than him. He had a previous gf who kept invading my personal space and would take my belongings whenever I was not in town. I tell him to get her to stop, he either doesn’t or she doesn’t care. That relationship ended terribly. The new girl begins to invade my space as well and they generally do not clean up after themselves. My sister is always comparing herself to me in a passive aggressive manner, she’s 33. It’s just a lot. I’m cutting ties with some “friends” who get upset when you try to communicate something or express a need. So that’s the thing, I’ve been a people pleaser my whole life. For years, my needs and opinions have been dismissed. And now that I have clarity and am putting my foot down, it looks like I’m losing people. Has anyone experienced this? How did you deal with it? Thanks so much.