Gaining confidence is not a challenging task. Confidence is a characteristic that is extremely attractive, especially to the female gender. Confidence can take you further than you can ever imagine. For example, if you were to be interviewed for a job, a person who is confident, can easily get a job, but don't mix confidence wiht arrogance, because there is a fine line between them. For people who need confidence here are ways that could help you gain confidence.
Education
Ralph Waldo Emerson said "there is no knowledge that is not power" and he's right; power is knowledge. By educating yourself via reading current events, or going to college, you are setting yourself to gain the abilities to be more aware of what's going on in the world. By being aware of the current events, you are accumulating information to raise your ability to know and talk about interesting information. A person who shows confidence regardless of how ignorant others are, gains a lot of brownie points for the audiences.
Traveling
Meet someone who travels a lot; you will see that person has confidence. By traveling, you are going out of your comfort zone and meeting new and interesting people. By traveling to new places and meeting new people you expand your horizon and gain an insight of getting to know new things you have never known before. Let's be honest, someone who stays home all day isn't that interesting; they are boring and uneasy to talk to. When you travel, you see new things to enrich your mind, you see places that you probably could never imagine.
Meet New People
By meeting new people who learn about their experiences and you learn. Everyone has a different perspective in life, they may know things that you may not know. By talking to others you learn how others are and you learning their side of the story gain confidence by doing so. Also, by meeting new people you may make mistakes in terms of talking, and by making those mistakes, you learn from those mistakes, which is part of growing up and developing. You learn other people's stories and you unintentionally you develop your personality to be interesting and confident. Don't stay with your ethnic group or linguistic group, go out and meet people who you normally would not hang out with.