Should I care if I acted stupid some times and ruined my reputation and should I care about it?

Should I care if I acted stupid some times and ruined my reputation and should I care about it? and I am still also thinking about my past and Think of it i am stupid , hated and ignored and I still have the same thoughts also I am getting Offended , Bullied and slandered... I feel some times when I talk and no one replies , some one ignores me... i have doubts that some one or too many people at this event hates or ignores me...