I am overshadowed by my sister's popularity, mainly because she is so pretty. It was fine by me, or so I told to myself constantly, until things get out of hand (in my part).

People give me less respect because my sister is more beautiful than me, but I guess that wrong - people give me less respect because I'm ugly. I have the feeling that nature put me in this world so that people can point at me and say "she is ugly, so I must be beautiful". Nobody seems interested in my ideas, or even my very existence. Even my parents (I overheard them) said I am unlucky in their business, whilst my sister drew every customer in because she is so beautiful.

Is it really true that less beauty means less of everything else? It seems so, because I am stupid (because no one seems to be interested on what I say, so I must be stupid right?), and fat (100 pounds, 5 ft. 3), and ugly.

Lately, I destroyed pictures that have my face on it. I closed my online networking accounts. I broke my mirrors. I am also in the process to quit school. Everybody seems to celebrated all of it, maybe it is time for me to go away completely?

First off don't think that.. my sister is way better loking then me and she's 3 years younger!! My mom even likes her better. But if I paid attention to my mothers feelings I might as well walk off the face of the Earth!
You have to live for yourself, not for others. Otherwise what would be the point of living.
Tell your parents how you feel, tell your sister too. She probably doesn't realize what pain she's causing you. Don't ask her to get ugly though, that could be taken the wrong way, just say that your hurt because you feel like no one pays attention to you.
Don't quit school because of other people, prove them wrong! I bet your real smart, smarter then your sister even-so don't do something as dumb as quitting school.
You shouldn't let other people get to you, do things becuause you want to not because other people want you to.
It's your life, live it!

Physical beauty is sometimes over-rated.

Most of the successful people I know would never win any beauty pageants,but their goodness of heart and soul and their intelligence shines through because of their confidence.

Your sister maybe beautiful,but I am sure your feeling of self worth is at an all time low because of what you sense others not noticing you.Believe me, if you think all the people you meet are shallow then I am sure it is just your lack of confidence coming through.

I am sure many of them are interested but because you have learnt not to value yourself (due to your family and friends),it just seems that people are not interested.

Maybe you need to participate in activities you like to learn and/is good at.Maybe you could try a totally different type of hobby you have not tried before.

Is there anyway for you to join extra activities in school?Drama?Sports?Or any other activities could boost yourself confidence.

First off don't think that..my sister is way better loking then me and she's 3 years younger!!! My mom even likes her better. But if I paid attention to my mothers feelings I might as well walk off the face of the Earth!
You have to live for yourself, not for others. Otherwise what would be the point of living.
Tell your parents how you feel, tell your sister too. She probably doesn't realize what pain she's causing you. Don't ask her to get ugly though, that could be taken the wrong way, just say that your hurt because you feel like no one pays attention to you.
Don't quit school because of other people, prove them wrong! I bet your real smart, smarter then your sister even-so don't do something as dumb as quitting school.
You shouldn't let other people get to you, do things becuause you want to not because other people want you to.
It's your life, live it!

I think that is fair, but the loneliness is eating me.

Physical beauty is sometimes over-rated.

Most of the successful people I know would never win any beauty pageants,but their goodness of heart and soul and their intelligence shines through because of their confidence.

Your sister maybe beautiful,but I am sure your feeling of self worth is at an all time low because of what you sense others not noticing you.Believe me, if you think all the people you meet are shallow then I am sure it is just your lack of confidence coming through.

I am sure many of them are interested but because you have learnt not to value yourself (due to your family and friends),it just seems that people are not interested.

Maybe you need to participate in activities you like to learn and/is good at.Maybe you could try a totally different type of hobby you have not tried before.

Is there anyway for you to join extra activities in school?Drama?Sports?Or any other activities could boost your self confidence.

I can think of none - my sister is everywhere, you see.

elune,
Write here and gain insights from people who have gone through OR are going through what you are.
Then when you have gained enough confidence, try to find new friends.

Try not to compare with your sister,but compare with your own self , as in how much better are you doing in a sport for example.

It could mean having less superficial shallow friends

You have to live for yourself, not for others.

What other people think about you shouldn't matter. People only like to think and say bad things about other people because they have insecurities about themselves. Don't just think about all the things wrong with yourself. Think about the things that you have and she doesn't. That way, you realize that you are better than her in some things. Then flaunt it. Rub it in her face... basic sibling rivalry, right?;)

Elune,
I disagree that rubbing it in her face is the best solution. But maybe finding your own merits and making the most of them would help your situation. Take the time to explore your own skills and think about what really matters to you.
Do you get along well with your sister?
It sounds as if you need to be in a more positive environment. Do you have many close friends who you can spend more time with?
I definitely agree with Gernald that talking to your family about your feelings is a good idea. And it's possible that you might benefit from spending more time away from your sister if you really feel that there's too much pressure. I'm not suggesting that you should avoid her or risk your relationship, but perhaps considering working away from the family business. It might be good for you to get out and meet more people.
I've always found that appearance is completely irrelevant once I get to know somebody. Beauty really is only skin deep. I'm sure most people think the same way. If you have it in you to smile at somebody, no matter what you look like they're bound to think you're gorgeous.
Take care,
Kal