how to get confidence?

Practice. That, and change-of-focus. It sounds like you're focusing on "people's reaction to you." What you want to focus on is "accomplishing your best purpose." And with the girls, that purpose should be 'the purpose they are following (which you can lead them to).' And in most places where you meet girls (not counting 'in-between classes,' when everyone's purpose is "to get to your next class on time"), your- & their purpose is "to have fun, whether anyone is with you or not." Just get out there & have fun! If you're having fun, and see someone you want to invite to join you in having fun, let `em get closer!

hello kiran! nice to meet you here. So you have confidence problems and you think it affects your interpersonal relationship with your peers. I wanna share with you my experience about this problem. When i was in grade school until high school, i was really shy. I can not talk or approach my peers and even talk to my teachers about my problems. But everything change when i entered college. I was very active and i socialize effectively. I am no longer a shy boy and i can talk to anyone without hesitation of being rejected or whatsoever. To avoid shyness, i expose myself to the public. I go to places where there are lots of people. I participate in school activities and keep in mind not to be shy. I believe that shyness is just a state of mind. I keep on affirming myself daily that i should never be shy until one day that affirmation came true. I also read the law of attraction book which talks about getting the things that you want. The book helps me gain enough confidence. There are so many free articles on the internet about this. Try to read it and you will see the results that truly works.

Well Kiran, the techniques I have used for this are Simple, though not always easy. The first one, is smile as much as you can, even if you don't feel like it, or there is no one around. The second is, visualize yourself acting and being confident, for 10 minutes each day. The Third, is just before bed, and right when you get up in the morning and through out the day, tell yourself. I am a confident, powerful, loving, person. Fourth, Remove the "agenda" from your conversations with people. That is to say, do not try to get something from the conversation, never have a feeling that you need an outcome, just talk to talk, and worry not about the results. And fifth, put yourself in situations where you need confidence, join toastmasters, or the debate team or something, a place where you need to show your confidence, and practice practice practice, with people around to support you. Cheers.