Pop thoughts from your post:

1. "Murphy Bed Desk: Change the environment from bedroom to work room." Here is a DIY Amazon has them for US $1,600. Others for US $5,000.
2. Clutter is a strategic enemy. Declutter where your eyes fall, while working. In particular, move any image that can be construed as a face out of your field of view. Neurons are hard wired to recognize faces ... constantly.
3. David Allen wrote ~ somewhere ~ that if you are over-organized, your brain will refuse to use your system. First 3 chapters of GETTING THINGS DONE are great for a simple organizing model.

Disclamer: I work for a FANG company so my view is probably a bit skewed

My advice on working as a data center tech/engineer

• Make linux your new best friend. It may seem daunting but try using linux as your main OS. This will give you the start that you need to get some hands on experience. Most shops, big or small, will have all or a large percentage of their machines running linux, the faster you can pick this up, the better. This will serve you well al through your career in a technical role.
• Force yourself to get familiar with the command line
• Focus on the big 3; linux, hardware, networking. While the ME side of the job is important as a DC tech, the big 3 is your bread and butter. Repairing machines, gaining console access, and making sure they are available on the network. That is what data center tech boils down to in a KISS way.
• Don't forget the soft skills, communication is extremely important and very often over looked but I see people struggle with it everyday. It holds them back from getting bigger projects, lead roles, and promotions.
• Work is not where you learn. At work your driving metric should be productivity not just technical ability. I often see people, myself included, spending far too much time troubleshooting for the wrong reasons. If you find yourself in a situation troubleshooting because you want to learn something, step back and ask someone else for help. You will probably learn more and be faster than wasting time trying to learn while you should be being productive. There is nothing wrong with not knowing something.
• Have a system for time/task management. I can imagine working at amazon you will be exposed to mountains of information and lots of signals and noise. Having a system to manage your time and attention is an invaluable tool.
• Learn how to manipulate data fast. Spreadsheets, csv, awk, sed, grep, etc
• After you get your feet wet focus on projects not technology this will help in interviews
• If you have the chance to get a degree do it, from my experience in tech companies a degree in a STEM field still holds some weight.
• Most importantly, use Velcro at all times in all situations. If a machine is broken it probably just needs some velcro on its cabling. If a link is down, use velcro to dress it properly. The cabling will look so good no one will care the links are down.

Certs

• CCNA
• LPIC-1
• Server+
• [Fiber U ]
• schneider electric data center certified associate

Reading List

• how to be a star engineer
• DevOps Troubleshooting: Linux Server Best Practices
• cloud data centers and cost modeling
• Site Reliability Engineering: How Google Runs Production Systems
• Getting Things Done: The Art of Stress-Free Productivity
• Large scale studies of memory, storage, and network failures in a modern data center.
• The Datacenter as a Computer: Designing Warehouse-Scale Machines, Third Edition
• How Linux Works, 2nd Edition: What Every Superuser Should Know
• https://www.usenix.org/system/files/lisa/books/usenix_22_jobs3rd_core.pdf * Deep Work: Rules for Focused Success in a Distracted World * Time Management for System Administrators: Stop Working Late and Start Working Smart

Watch List

• Eli the Computer Guy
• datacenterHawk
• Everything You Always Wanted to Know About Optical
• Linux System Administration Full Course

I could go on forever but i think thats start. Feel free to PM if you need any advice on your journey.