I am shy to admit that I have followed the advice given all those years ago by a wise archbishop to a bewildered young man: that moments of unbelief 'don't matter ' that if you return to a practice of the faith faith will return.
There have been times when I felt suicidal and I would stop my head from going in that direction of negativity because I thought there'd be something I'd miss that was funny in the future. If there's a chance I'm going to laugh tomorrow then want to live to experience that.