I really think the author of the book has a perfect life and no personal experience of major depression or having his life suck real bad. He is merely gathering stories and speaking about these topics in his own opinion towards life, as his life is perfect and he talks about how we can solve these problems so foolishly and naive. He talks as if life and suffering was so simple and straight forward. Nothing lasts forever, eventually you will find out that you can trust no one but yourself. Learn to live and suck up your life alone, and you will find a greater light within. You must emerge from your suffering and depression alone, standing above your wreckage victorious, as a stronger person inside out. If you let a hand pull you out of the pit of depression you yourself created you are doomed to create a deeper pit, with no hand to get you out of your deep shit now. If happiness was everlasting, it wouldn't exist.
If pain was simple, it would leave us.
If happiness did exist, it wouldn't last ten seconds.
Joy is a lie.