The people who knows the natural and authentic attitude you possesed will adore you when you have manners, because there is no substitute for being real. Life humbles you deeply as you mature. Manners is always the number 1 aspect because it is the way you treat people (what you say or do matters).
Without manners, life and situation can be complicated. Create the kind of shine that is acceptable to everyone no matter how simple nor ordinary you are.
May you continue to brighten one's heart daily. ;)
photo taken in the heart of Netherlands