(from Wikihow)
Steps
1
Never, never, compare yourself with people. It points out the good parts in the person and makes you feel bad. Just think of all the good qualities you have too.
If you feel you don't have any good qualities, join a few clubs or sport teams, or even start one. This can give you a talent to be proud of.
2
Remind yourself most things are possible if you try hard enough. Set your goal and work to reach it.
3
Set a goal to make friends. If you feel you don't have enough of something in your life,such as friends, make a goal to get more of it until you're satisfied.
4
Give everything a chance before you neglect or reject it. It might give you something you're happy with in your life.
5
Grooming. Appearance can affect you too if you feel ugly. Stay natural. You should change hair styles, clothing, and if you wear it, make up, but that's it. This can help you feel great.
6
Communicate needs. If someone makes you feel negative, like a friend, tell whoever it is in a nice way how you feel. Try to fix the problem.
7
Stay upbeat. Don't let other people drag you down!! What they say is ALWAYS their opinion.
8
Do what makes you happy and isn't harmful.
9
Smile! Always remember to keep that beautiful smile on your face. Smiling is actually proven to keep you happier when you are down and gloomy on a dreadful day. If you are sad, smile! If you are happy, smile! It makes you a happier person and gives other people a better impression of you. As I always say, it is worse to forget a smile than your purse or wallet.
original text:
http://www.wikihow.com/Build-a-Positive-Attitude