Stop being nice to people who don't get you or your affection for them. Sometimes even when you've set your expectations low, they might disappoint you. Cut yourself off. It may hurt a little but you don't need anyone who makes you feel like you're a difficult person to handle.
8. 'I will not try to please everyone in my life.'
You need to realise that you're a normal human being and not a bubble wrap. You will unintentionally end up offending and hurting people and that does not mean that you go on a 'please everyone' spree. Those who really want to stay in your life will always find reasons. Those who don't want to will find enough excuses.
9. 'I am not my mistakes.'
Make mistakes. Fall down. Shatter into pieces. Learn your lessons well and don't judge yourself through the periscope of your mistakes. You are not your mistakes, your mistakes were a part of you.