I’ve come to believe that there are two kinds of readers: those who read the introduction (if there is one) before the book and those who wait until after. I read it before. My logic is that if it were intended to be read after the text, it would be included as an afterward, not an introduction. Also, I find it can be helpful in getting my mind ready for what I’m about to read.
We all have them now and then. For most of us they fall on a spectrum that can range from a day of general bad luck/ things not working out right; to absolutely horrific, involving health crises or the loss of a loved one. I’ve had all of the above in my lifetime, and as much as I’d like to believe that all my bad days are behind me, I don’t. They’re a part of life and we have to learn to deal with them. Of course in my case, “dealing with them” can fall on a spectrum too;