1. Source the keywords from the place that makes the most sense to your business
“if you run an e-commerce site, Amazon and eBay are much better sources for keywords”
2. Keywords optimized for On-Page and Off-Page SEO are tough to rank for
3. Pay attention to Search Engine Result Page (SERP) features
So while the rest of us are chasing such high volume useless keywords, they are ranking for keywords that do not have these SERP features.
4. Focus only on keywords that improve your bottom line
Keywords are, therefore, categorized as Buyer Intent, Product Info, Question and so on and you need to decide which category of keywords you would like to focus your efforts on.