I've never been called a "nice guy" by a woman and I've never viewed myself as one either, but never the less, I still thought there would be some good advice in "No More Mr. Nice Guy."

I got to this page and this page and I'm left unsure of the author's meaning.

I do have some hobbies, interests, and other aspects of "me" that I feel gives me value. For instance, I play the piano very well, I practice martial arts, and I'm pursuing a career as an actuary. I attach value to these things and I identify with them.

Unless I have poor reading comprehension, Robert Glover seems to suggest that it is bad to attach your value and identity to attachments.

Why is this wrong? If we can't base our identity around our hobbies, interests, and career, then what should give us value and identity?

From what I understand since swallowing the red pill is that we should have high value hobbies and interests, such as lifting weights and staying and shape, and that these things should make us feel valuable. But Glover says being in good shape is an attachment.

Furthermore, Glover suggests that

It is impossible for Nice Guys to grasp that people might like them and love them just for who they are.

I thought that was the #1 blue pill myth that you will meet a girl who will love you just for who you are.

So what am I missing?