The following quote isn't exactly orthodox Christianity because it focuses on self-reliance, and Christianity teaches radical dependence on God, not self. But I like a lot of the practical elements of the quote, especially - "we cannot foresee dangers no matter how vividly they are described to us," I preach at the jail weekly and every person there can relate to that. 

“We all have to learn that no one can help us except ourselves. 

Other people can sympathize and console, try to soothe our injured vanity, 

And try to persuade us that the dangers and disasters ahead 

are not so dreadful as they appear to be, 

and that the mistakes we have made are not irreparable. 

But no one can remove danger or regret from us, 

or relieve us of the necessity of facing our own troubles; 

the most that they can do, indeed, 

is to encourage us to try again.

But we cannot hope to change the conditions of life; 

and one of its conditions is, 

as I have said, that we cannot foresee dangers. 

No matter how vividly they are described to us, 

no matter how eagerly those who love us try to warn us of peril, 

we cannot escape. 

For that is the essence of life—experience; 

and though we cannot rejoice when we are in the grip of it, 

and when we cannot see what the end will be, 

we can at least say to ourselves again and again, 

"This is at all events reality—this is the business of life and faith!" 

For it is the moments of faith, endurance, energy and action 

which after all justify us in living, 

and not the pleasant spaces where we saunter among flowers and sunlit woods. 

Those are conceded to us, 

to tempt us to live, to make us desire to remain in the world; 

and we need not be afraid to take them, to use them, to enjoy them; 

because all things alike help to make us what we are.” A. C. Benson