When others feel challenged by your growth, they may try to use your past against you. They may bring up things you did, or who you used to be to try and invalidate the work you've done to become who you are today. Remind yourself that only someone who hasn't grown & evolved would feel the need to invalidate someone else's progress. Be proud of your growth. Be proud of the work you've done. Be proud that you aren't who you used to be. And don't let anyone try to take that away from you.