Confidence comes from positive reinforcement

Confidence is a rare commodity. It grows organically after positive reinforcement. Without positive reinforcement, there can be no confidence.

People who say otherwise, generally conflict fake confidence for the real thing. Fake confidence can backfire as a wise person can see right through your bullshit.

Luckily, you can do things that lead to positive reinforcement, on whatever subject you’re insecure about. A world-class kickboxer might feel confident in the ring, yet nervous when filing his taxes. His accountant might feel anxious talking to hot girls. And a womanizer might feel retarded trying to learn web development.

As long as you’re willing to adopt a beginner’s mindset and keep learning and iterating, you will become better at whatever you’re doing. And once you experience enough positive reinforcement, your confidence will grow naturally.