When you're reaching the next level of your life, the old stuff comes up to be cleared out. You can be celebrating reaching your goals, reaching that next level vision you had for yourself and then out of the blue start having panic attacks. About shit you thought you had already dealt with.
About stuff that turns out you only partly healed. I believe we have 7 main areas in our life: Spiritual - our soul mission
Emotional/Mental - our healing /creativity / disposition