Think of a company that has a large number of processes and policies that are required for any new project. These are frequently a mixture of industry best prac

Think of a company that has a large number of processes and policies that are required for any new project. These are frequently a mixture of industry best practices and structures that were put in place over time to prevent problems that happened before from recurring. All of these processes and policies were added with the best of intentions, but the cumulative weight of them can make it significantly more difficult or time consuming to start and complete a new project. I think mentally something similar can happen. With experience you're aware of a lot of the pitfalls you fell into with your previous projects and so you've learnt tools/methodologies/languages/programming styles that can help you avoid them. As you're working on a project you can find yourself spending more mental time thinking about avoiding mistakes of the past, rather than just aggressively (maybe blindly) moving forward on the project itself.