The most important lessons in coding have little to do with coding and a lot to do with people - code is written for people not the computer. The more you know

The most important lessons in coding have little to do with coding and a lot to do with people - code is written for people not the computer. The more you know the more you will come to understand you don't know much; that is both good and bad (Dunning Kruger vs Imposter Syndrome). Every time you think you are the best in the room, look around and ask yourself are you overestimating your knowledge. If you are still the best in the room, maybe it is time to find a room with smarter people. Not every solution requires code / technology. The best code is easy to read and even easier to delete. Give your code to the most junior member of your team - if they struggle with it you need to make it simpler. There are many many lessons like these around - the single most important one - always be open to new ideas no matter how much they oppose your current beliefs; strong opinions, weakly held.