Mind, skill, gear.
Gear comes out of a box, so to speak. Easiest part of the group to address in the respect of being able to buy it as an item (or items). Choose good quality gear suitable for your envisioned tasks. Know how to maintain it, safely store it, etc. Once the gear part is out of the way comes the harder parts ...
Mindset includes knowledge and how we apply it to our interaction with the world around us, and has also been described as the interpretative process we use to
tell us what's going on around us. It can also include - and be affected by - individual beliefs. Naturally, this can also encompass personal
assumptions and feelings. Might become slippery ground. If the knowledge part doesn't include understanding the laws of wherever you are, that might become a huge unwelcome hole in your preparations.
Skillset? Well, that includes understanding your gear, for one thing, and how to safely, properly and effectively use it under the range of conditions reasonably envisioned. Plenty of "oops" territory to ignore, overlook or simply not anticipate. If your skillset is going to need to be adequate to your needs, you better hope you understand your needs.
Arrange your emphasis on these things and prioritize them however you feel is prudent and reasonable for your needs. Consider the consequences of ignoring critical aspects of all of them.
You buy the gear ... and you can buy access to skillset development (leaving you with the challenging conundrum of skillset maintenance to address) ... but mindset is probably one of those intangibles in life. What's it mean to
you?
Hell, if I had the answers, I'd write a book.