"Perfect love casts out fear." It is not be thinking ourselve sright that we cease to fear. It is simply by loving, and abandoning ourselves to the One whom we love without returning to self. That is what makes death sweet and precious. When we are dead to ourselves, the death of the body is only the consummation of the work of grace.
What I find distinct about gratitude in the wilderness is its simplicity -- the thankfulness I feel here is for what I usually take for granted: my capacity to breathe, move and see ... For the most part, gratitude here wells up unexpectedly, in the quiet corners of the day, over events small and ordinary. Gratitude is the other side of dependence on God: to take anything for granted in the wilderness seems presumptuous, blasphemous. And so, here in these naves of vaulting stone, prayers of thanksgiving begin to edge out prayers of petition.