Overthinking. What am i supposed to do?

hie.................. o build confidence you need to consider following but not exhaustive steps. Some of these are explained by James Altucher's posts in various life improvement techniques. I would love to explain them with some illustrations. Nobody learned anything by hearing themselves speak. Less lies, more time to listen and learn and think and daydream. Less embarrassing situations. Less masks to wear. Confidence comes when your understand the situation and behavior standing in front of you. Read them as the lion reads his prey before attacking. This strategy helps you to regain confidence instantaneously if you are able to understand what other person needs from you. Read as much as you can. By reading books one can gain knowledge. This knowledge will boast your confidence. And no one can stop your enthusiasm for the topic which you mastered in. Reading is just between you and your brain cells - your wisdom. You will fly with confidence in an auto-pilot mode. Here is what Tyrion Lannister (Game of Thrones) has to say: a mind needs books as a sword needs a whetstone. Remember an imp has confidence to defend his empire. Think of a situation when you're up for an interview and are unable to answer those question which you have read or studied before. That very moment you will realize the importance of understanding the nature's phenomena. Read few but thoroughly. Your body language itself will do the talking.On the other hand a limited knowledge about the topic will shatter all your confidence into a mere confusion. You are the average of five people around you. Your character can be judged by your friend circle. That's why many resumes are judged by verifying your group activities. Meaning if you're in theater club, or even sing a Karaoke song publicly, you won't lack confidence. The programmers: Steve Jobs, Bill Gates, Ted Leonsis, Paul Allen, Steve Wozniak and a dozen others all came out of the Homebrew Club. The art scene in the 50s: Jasper Johns, De Kooning, Pollack, etc all lived on the SAME STREET in downtown NYC. YouTube, LinkedIn, Tesla, Palantir, and to some extent Facebook, and a dozen other companies came out of the so-called “PayPal mafia”. These groups have a common school of thought where individual learns from others and passes his/her negative characteristics behind - indirectly helping you to build your confidence level. Be Healthy Not the fake posture or smile of the usual news reporter or the air host/hostess but of the soldier has the real confidence to stand out. Health impacts your cells and helps to keep your whole body system to output a positive fruitful result. Ever imagined why an army officer is consistently working out? From where do they gain confidence from? Jan Leadbetter and Jennefer Chen have correctly mentioned in their answer.