Don't mind me quoting you, I have a slow brain and this is a new concept for me and I'd like to know it, though brain is slow lolAre you saying that you don't think you have a right to complain about any of the specific bad experiences you've faced in your life? Or are you saying that you don't think you have a right to complain that you've had a bad life? The reason I ask is because I don't think 'the bad' necessarily has the context of 'the good' in the moments when you're going through the bad. I think the bad only gets the context of the good when we reflect backwards on the totality of our lives to-date. Moreover, the context of the good doesn't change the actual, literal experience of the bad, it only affects how we look at, make sense of, and evaluate our experiences and lives thus far.
I've been playing with this idea of colors on a painting. Each of our experiences adds a different color to the canvas of our life because each experience is different. When we do this thing where we get frustrated with ourselves for having feelings about the bad because we've also had so many wonderful experiences and feelings—and we think by giving attention to the bad we're not being grateful enough for the good—I think all we're really doing is blending all the colors together under the false belief that the end result should match the colors associated with good experiences, when in reality we actually just get brown.
TL;DR, a broken bone doesn't care whether you had your favorite ice cream 6 hours earlier. You're allowed to have feelings about your bad experiences, and that is a separate but perhaps related process to how you feel about, make sense of, and evaluate your life as a whole.