Everyone in school thinks I am bitter. How can I change their minds?

You can Show them kindness. This can be done by helping them on an assignment or having a friendly conversation with them to show them your personality for example.

Let them think what they want to! But if you really wish to change their minds, you can always try to smile more, say hi to them and try to keep sarcasm on minimum

by showing them how happy you are. do what makes you happy and they will see that you are a pleasant person

You should know first why they think you're bitter. Ask them what makes them think you're bitter. Recognize your flaws a.d focus on improving yourself. What they think about you is not that important but be better person for yourself is more important.

Well, you can't force people to thing differently but perhaps a good start would be to first figure out why you feel that everyone thinks you're bitter.

You can never be wrong with smile. Smiling means a lot to people. It can reflect as you being an open person and you're willing to be a friend. Smile!

well you know what, let them be. i read this line somewhere," if you start thinking what others think about you, what will there be left for them to think". I had a bad time as a kid, and was bullied, maybe my situation is opposite of yours but i guess the solution is same, let them be rude, let them call you names, all you have to do is control your mind, to not get affected from these. thats much easier than controlling others into believing you are good ryt.

When I was in school, people thought that I was bitter, and upset at reality, changing their minds is out of the question. The important thing is to realize that you are your own person, and that no one else can put you into a box unless you let them.

Do some random acts of kindness for people or just go up and have a friendly chat with them! Most people will change their minds once you do it enough, and they will see you are a great friend.

1) Stop being calculative immediately and start showing your gentler, less angry side...with time, they will forget why/if you were bitter and just remember you were not. 2) if you are misunderstood and a clarification-chat can help...go ahead have it! have a heartfelt and honest one =) 3) Remember if you disagree...you can voice out your disagreement...ANYTIME. but voice it out...dont force it...voice it. and if they dont accept your views know that you are not wrong...but know you can only voice...g'luck!