A species does not live within its environment; it interacts with it. Over a period of time a species can interact so violently that the changes it catalyzes can cause it to change dramatically--even to die out. Scientists estimate that 90% of the life forms that have inhabited our planet are now extinct. From the earliest single-cell life form to the human animal, all have interacted with the environment. All have created problems for themselves. All have been agents of evolutionary change. All have experienced evolution through cataclysm.
If the body is only the vehicle by which the soul can access the experience of physical living, then there is no real physical me. The soul (or life force) is the only real me. If you and I (the souls) want to achieve the most from this earthly lifetime, the more varied the experiences we should seek. That said, it’s too easy for you and me to fall into a comfort zone and try to avoid change. To keep this from happening, the experiences change rapidly as a result of the body moving from infancy though old age. The physical changes help to enhance our learning curve, our ability to serve, and our chance to evolve.
In order to remain self-sufficient and calm during chaos, one must have a holistic perspective--a master plan with which help you cope. Those who are flexible and have prepared themselves will find that the accelerated changes to come will provide a profound opening of consciousness to minimize the stresses and discomforts of the journey.
Thoughts are behavior. The mind is like a muscle which can be improved with practice. Many 'habits' are a result of poor thinking skills. We play thoughts over and over which keep us distracted from effective problem solving. When out-of-control thoughts run around inside our heads they cause anxiety. We then focus on unproductive thoughts and ideas.