I’m talking with one of my sons who is reading Lewis’s A Grief Observed. I asked him, is there anything in that book that is uniquely Christian? We can’t find anything. Maybe he didn’t intend it to be but I suspect most Christians who are aware of the book assume it is.

1. Suffering helps you refocus.

2. Suffering removes misunderstandings (idols)

3. Suffering makes you reorient yourself toward truth while recognizing it always remains on the horizon.

4. Suffering reminds us this life a shadowland or dream and the reality awaits on the other side of death.

When Christ shows up it is as a co-sufferer. There are lots of those. “God suffers too.”

Jocko is better on suffering and overcoming.

I don’t see where Christ redeems Lewis from sin for which he is at fault without excuse (not due to shadows or limitations or finitude) and gives him power to overcome sin in his life by his Spirit. This world is not a shadow to escaped it is God’s good creation under his curse due to human sin. It’s all Platonic skepticism about this world of shadows and longing for ideal realm.

If you want self help on how to overcome that isn’t uniquely Christian stick to Jocko.