@ magorkhe.... Life is a constant play of equilibrium between internal and external environments. This is why Ayurveda emphasize so much on awareness. The human nervous system is not made to suffer but to enjoy this beautiful life. However, due to ignorance people indulge in things that are harmful for them.

External environments cannot be controlled (exception applies). Winter, summer, spring, fall, Monsoon, they have their own time and they come and go. So, don't try to control these natural weather! Let there be snow! Let there be rain, and let there be scorching hot summer day. What you can do is bring awareness of the relationship between internal and external environment. In other words, take care of your internal environment by observing external environment. For example, during winter take extra care to preserve the body heat. Drink some spicy soup. Winter can be depressing because it is damp and cloudy. Considering this, be prepared and do light exercise, do some pranayama which revitalize the mind.

So, it's not about controlling the external environments. Rather, observing it and bringing a harmonious relationship between internal and external milieu through the help of our own inner intelligence. Your body constantky gives clue to you wether things are balance or unbalance within. Alll you need to do is be aware of this clue and implement a technique of Ayurveda: Opposite heals, meaning if you have cold, eat those food that brings fire in your body. Lastly, living is an art and this requires constant vigilance on your part.