youre right...ptsd is unpredictable...and unfortunately you tend to get worse before you get better in therapy. I learned to become more accepting of my unpredictable mood swings by developing the mantra "this is normal for me" to respond this way. unpredicatable that is. I never knew how I was going to react but when I melted down I would often judge myself harshly and then feel bad for being such as mess. when I began accepting those reactions as normal for me, someone with ptsd, I became more compassionate with myself and allowed for healing to begin. take care.