I am a little confused on your first point. Sorry if it is a simple one to understand and I’m just missing it. What good would finding dead links on Wiki do for my personal website? I thought you would explain how to find dead links faster within my own site… but it seems that your tip is way more valuable than that. I just don’t quite understand what I do to positively affect MY site with this. Any help would be great 🙂 THANKS!
If you're looking to upload an image to a blog post, for example, examine the file for its file size first. If it's anywhere in megabyte (MB) territory, even just 1 MB, it's a good idea to use an image compression tool to reduce the file size before uploading it to your blog. Sites like TinyPNG make it easy to compress images in bulk, while Google's very own Squoosh has been known to shrink image file sizes to microscopic levels.

I read The Art of War in college, written by the Chinese general Sun Tzu (author of the quote above). While his actual existence is debated, his work is often considered as brilliant military strategy and philosophy. Thus, The Art of War is often co-opted into business for obvious reasons. Throughout the book, you'll realize tactics and strategy are not interchangeable terms.
Lastly, it's important to remember that paralysis by over-thinking is a real issue some struggle with. There's no pill for it (yet). Predicting perfection is a fool's errand. Get as close as you can within a reasonable timeframe, and prepare for future iteration. If you're traveling through your plan and determine a soft spot at any time, simply pivot. It's many hours of upfront work to get your strategy built, but it's not too hard to tweak as you go.