The type of faith that matters is not that which says “it will all work put if I just believe hard enough”. Many millions of Jews were slaughtered who no doubt believed harder and more fervently than any of us.
Faith is the simple human quality of showing up each day and remaining emotionally alive and responsive. In a difficult world—and our world is on general physically easy but very very hard emotionally—you grow spiritually by not dying. Take each day as it comes. This is the way to endure.