I am currently seeing a therapist for mental areas, anxiety , depression. Mostly anxiety. Meditative breathing helps. Calm app helps. Cognitive Behavior thinking for me does not help with the 5 stages. But it does help others. your right it’s all temporary. Changing our perceptions to healthy thinking. Positive thoughts. Ending doubt and obstacles that cloud the mind is a switch. Focusing on here and now and not what ifs and maybes. I have Smoldering multiple myeloma. I live with the fact that this will be with me till the end of my days. Thou it is stable for now I and my anxiety live with uncertainty as to what the future holds.