Very well said! The minimal consideration towards other person is respect and much more if there’s love and care.
Unluckily, it sometimes coincides that people who are more close to you are the ones who don’t treat you well.
I’m sorry you didn’t feel the treatment you deserves from your family and your best friend.
I put myself in your shoes and I can figure how hard you found to trust other people.
I like your optimistic. This is the way.
Your self-esteem is over it all. Family is not chosen and the best friend, you already learnt, even who we consider true friends, they in real don’t feel the same towards us.

Your resilience is the right path not only for you but also the ones who are gonna have the opportunity to enjoy a healthy person.