John 16:29-33: in context

On the last night, the disciples finally think they understand: now you are speaking plainly; now we know you know all things; by this we believe you came from God. Jesus gently punctures their confidence: do you now believe? The hour is coming, and has come, when you will be scattered, each to his own, and leave me alone. Yet I am not alone, he says, for the Father is with me. And then the word that has carried Christians ever since: I have told you these things so that in me you may have peace; in the world you will have tribulation, but take heart, I have overcome the world.

Jesus does two honest things here. First, he tells his disciples the truth about themselves, that their confident faith is about to collapse; within hours they will scatter and abandon him. He does not flatter their claim to believe; he predicts their failure, and yet he does not reject them for it. And even in that, he shows his own security: you will leave me alone, yet I am not alone, because the Father is with me. His peace does not depend on his friends standing by him, because it rests on the Father's presence. Second, he gives them, and us, the balance that holds the Christian life together: in me you may have peace; in the world you will have tribulation. He does not promise a life without trouble; he flatly predicts it, in the world you will have tribulation. But he offers a peace that does not depend on the absence of trouble, a peace found in him even while the trouble remains. The two coexist: real tribulation in the world, real peace in Christ. And the ground of it is his triumph, take heart, I have overcome the world. The world's trouble is genuine, but it is a defeated world's trouble; the one in whom we have peace has already overcome it.

Do I expect a life free of trouble and lose heart when it comes, or can I hold both of Jesus' words, in the world tribulation, in me peace, resting in the one who has overcome the world?