You cannot live backwards. You cannot erase mistakes. Life doesn't come with an eraser for blunders along the way. You don't live in pencil. What is done, is done...inked in.
What you can do is live without regret. Learn from your mistakes. Embrace your blunders and learn from them instead of repeating them. Gain wisdom, not just experiences. Love yourself...mistakes and all.
Value yourself. Appreciate yourself. Know that you add value to those around you. But understand that simply because you love, value and appreciate yourself does not mean that everyone else you come in contact with will do the same. Continue to be yourself anyway...steadily growing in love, knowledge and understanding.
It's beautiful to be you...simply beautiful.