"Here’s the thing about withdrawal, from any drug, substance,..." — Elizabeth Gilbert quote meaning

Here’s the thing about withdrawal, from any drug, substance, person, or behavior: The reason it’s so excruciating is that not only do you have to feel the pain of losing access to that thing you desire more than anything else, but you also have to feel the pain of every other loss you have ever experienced along your life’s journey. All the previous failures, all the previous crashes, all the previous disappointments. It’s like a twenty-car pileup of failures on an icy highway, and there’s no way to get away from it. Worst of all, withdrawal forces you to feel your original suffering again—the deepest childhood grief or ancestral wound that started you out on this journey of addiction in the first place.