I believe it’s almost identical to other fields: review, revise and reflection is the best way to learn. If someone want to improve his code quality, he should

I believe it’s almost identical to other fields: review, revise and reflection is the best way to learn. If someone want to improve his code quality, he should continuously review his code, best together with a “better” programmer. After finding the weak spots of his code, he should try to improve them by himself. To do so, he need to learn from good examples, exploring the reason behind through computer literature and experienced coders. After achieving a better version, he should reflect on his practice, how he might come to the solution himself in the first place, why did he choose the first solution and very soon he will start to recognize certain patterns. Regarding technical expertise, he should find where the challenge lies and start studying and practicing to make the knowledge sticks. He should go out of his comfort zone, challenge his ability and make mistakes. That is the only way to mastery.