You are a result of your thoughts. If there is nothing else you learn on this planet, you will learn that this is the rule in this reality and the rule of many other realities.
Thought creates experience. Why not give yourself a gift and begin to think of yourself in a capacity that is exceptional, magnificent and uplifting; free yourselves from the need to have the rest of society agree with you. Validate yourselves.
You are what you think you are.
You have created this person filled with doubt, distrust, and self-esteem issues. Your experiences kicked started the feelings, but you took on the negativity and ran with it. As an adult, it has to be up to you to decide how you want to live your life. It is a choice, if you want things to go your way, you need to send out positive vibrations so that you will receive more positivity.
If you want to be happy, then be happy.
Other people may appear to validate you, make you feel better for awhile, but, ultimately, it will be up to you. You are in charge, so ditch the negative feelings and "think of yourself in a capacity that exceptional, magnificent and uplifting."
Continue this until you believe it, this is your authentic self - magnificent.
Use it as your mantra, build yourself up and be free from the need to have others authenticate you. Validate yourself.