Reinventing yourself is not complicated, but it's not easy. It takes work and the work never goes away, it just comes more naturally the longer you do it. Be prepared for the journey, and remember to celebrate the small victories, have patience to let things happen, but never be afraid to take action, and don't ever think you have all the answers.
I believe that if we make the effort to listen, we can hear our hearts guiding us. And if we think we can ignore its wisdom, we will lose our way. Eventually we have to face up to our past choices. But doing so gives us an opportunity to bring our love and compassion into the world by listening to our wise hearts.
For most people, seeing is believing. The best advice that I can give on this is to just brush it off and keep on moving. Rejection is part of the process and you will hear a lot of it. The key is to take it and accept it for what it is (which is sheer opinion). After all, convincing is done in the doing.