May your character preach more loudly than you words. Who you are and your values have the ability to influence others and the world. Actions speak louder than words so therefore who you are speaks louder than what you have to say.
Just because you aren't given the credit and haven't been recognised for your work doesn't mean you have to give up or stop. You don't always need credit, other people do not always have to know what you are capable of doing as long as you do.
I think you are finally able to move forward when you can look back and accept the past, realizing there are no mistakes, no regrets just moments in life that changed you, making you a better version of yourself!