When you're coding you can look up most stuff on stackoverflow etc in not that much time. Another approach, is to daily spend time studying the stack you curre

When you're coding you can look up most stuff on stackoverflow etc in not that much time. Another approach, is to daily spend time studying the stack you currently work with including the source code and books about the theory of architecture for those sets of tools. Over time you can expand into other areas too that seem interesting. Having a really deep and comfortable knowledge of your underlying language and tooling goes a long way toward being able to work quickly and make choices that are a natural fit for the stack rather than shoe horned in.