This post:

How do I show her how I feel about her?

Specifically this part:

Be customer-focused, not you-focused.

This is not news to anyone who's ever studied marketing. One of the principal tenets of effective marketing is to understand what motivates your customers to buy—usually some kind of problem they need solved—and address that. Many businesses focus on themselves instead of on their customers. They will brag about their qualifications, their product, the awards they've won—anything except what the customer cares about—the problem they need solved.

Spark demand by forgetting about your own needs

But when you focus on the needs of the customer, something magical happens. Resistance falls away. Instead of selling, you find yourself screening for qualified buyers. You sell more, you can charge more, and you have a better relationship with your buyers. And the same principle applies when you're meeting and attracting women.

Well, I'm really confused. At some level I know this is right. It just seems right. But at the same time, I don't know how to implement it.

I'm the typical nice guy. A lot of us here are/were. I'm trying to "destroy" that part of my personality, using resources like No More Mr. Nice Guy, that book.

How come I focus on THEIR needs, forgetting about mine, and yet remain attractive?

Since it's featured in that important section of this subreddit it's obvious to me that I'm getting it wrong.

Care to clarify? Maybe a little example?

Thank you :)