Sorry for the non-answer here, but I think this is rather subjective depending on what kind of work you're doing and the tools needed for the job. With that be

Sorry for the non-answer here, but I think this is rather subjective depending on what kind of work you're doing and the tools needed for the job. With that being said, learning shortcuts/macros for whatever tool you're using can lead to impressive productivity gains. This can be learning up more shortcuts for Vim, to learning how to create tables efficiently in Excel (lol). Customize some for yourself if you need to. Another thing that has worked for me is automation. Automate as many things that are repetitive as you can. In software, this can be simple bash scripts. Learn how to scripts well. If it's 3 manual steps that you need to get an app running for dev purposes, stick it all into 1 script and run just that 1 script. You're minimizing the risk of human error and increase your productivity significantly.