That book is awesome, someone gave it to me when I was looking for the exact same thing, it's not that long and worth multiple reads for sure.
Also A Profound Mind by HHDL is very helpful, and a section of it covers the same subject matter.
"Just as a lotus does not grow out of a well-levelled soil but from the mire, in the same way the awakening mind
is not born in the hearts of disciples in whom the moisture of attachment has dried up. It grows instead in the hearts of ordinary sentient beings who possess in full the fetters of bondage." -Se Chilbu Choki Gyaltsen