However, the message is confusing. It says: To be successful, we need only half of our selves—our strengths. By redefining the concept of strengths, I have created a framework that describes all of the ways that a person can think, feel, and behave as strengths.

How is it that we don't have weaknesses?

We are so used to thinking in a positive-negative framework, which is a self-limiting way of thinking. So, it's almost natural that when we think about a strength we have, we immediately start looking for a negative, or a weakness. For example, if you see yourself in positive terms as outgoing and gregarious, you might think negatively about yourself when you are quiet and less expressive. I want you to see yourself not in terms of strengths and weaknesses but in terms of opposite strengths.

Something about this troubles me, WC. It feels like lying to myself to just make myself feel better. Sort of like the way they changed kids' sports to be "everyone's a winner." I fear my checks and balances would be off.

Most of the Zen teachers whose writing I've read would agree with this entirely.

hey BGN, yes, I can see what you're referring to, however being conscious of these modes of thought will not imply lying, but changing a basic programing of the mind.
Having said that and (also agreeing with Lexica comment) I see this aspect as an upgrade of our current bias in thought towards a sort of detrimental dualism into a higher mode of thinking, a sort of lateral oneness if you like. try it, it may not seem so troubling once you feel the effects. and then we are all different, so maybe this mode of thought is not for you.. there aint no such thing as one size fits all..

there aint no such thing as one size fits all..

Sounds like a lot of psycho-babble to me. I don't buy it.