It sounds like you've gained a lot of experience with Unix and other command-line interfaces over the years. It's great that you've been able to apply what you've learned in different environments and use it to streamline your workflows. It can be challenging to switch between different operating systems and use different tools, but with time and practice, it can become second nature.
One way to reduce the confusion caused by switching between different operating systems is to use tools that are available on both platforms. For example, many of the Unix commands that you've mentioned, such as grep, sed, and awk, are also available on Windows through tools like GnuWin32 or Cygwin. Additionally, the PowerShell command-line interface in Windows includes many of the same capabilities as Unix shells, such as the ability to use pipes and redirections, so you may find that you can use many of the same commands and techniques in both environments.
As for integrating command-line tools into your daily activities, it's definitely possible to do so and it can be very efficient once you get the hang of it. For example, you can use the cal command to view a calendar, or use a tool like tmux to create multiple terminal sessions within a single window. You can also use tools like awk or sed to parse and manipulate text files, or use cron to schedule tasks to run automatically.
In the end, it's up to you to decide what works best for you and your workflow. It's always a good idea to keep learning and trying out new tools and techniques, as they can help you become more efficient and productive.