Vata, Pitta and Kapha
Each of us carries all three doshas in a distinct proportion. The goal is not to balance all three equally, but to maintain the balance that is native to you. Your mind may also have a different predominance than your body, and while your frame stays fairly constant, your emotional nature shifts across a lifetime.
A simpler approach would sell better. Instead, I am asking you to do the work: learn the qualities and notice how they apply to you.
The principle of movement. Vata is quick, creative and adaptable, and is the first to be disturbed by irregular routine, travel and stress.
The principle of transformation. Pitta brings focus, intelligence and drive, and tends toward heat and intensity when pushed too hard.
The principle of structure. Kapha gives strength, endurance and steadiness, and can slide into heaviness and inertia when stagnant.
These are general descriptions. No one fits a single box, and care is always based on more than dosha, including environment, genetic predisposition and health history.
What the doshas are
Ayurveda describes the body and mind through five elements: ether, air, fire, water and earth. The doshas are the way these elements organize themselves into function. Vata, formed from ether and air, governs movement, including breath, circulation, nerve impulses and elimination. Pitta, formed from fire and water, governs transformation, including digestion, metabolism, body temperature and perception. Kapha, formed from water and earth, governs structure, including the tissues, the lubrication of the joints, immunity and stability.
None of the three is good or bad. Every person has all of them, and every system in the body depends on them working together. Trouble begins when one dosha accumulates beyond what is natural for a particular person and starts to pull the others out of their usual relationship.
Your nature and your current state
Ayurveda distinguishes between prakruti, the constitution you were born with, and vikruti, the state you are in today. Prakruti stays fairly constant throughout life. Vikruti shifts with diet, sleep, stress, the season, illness and age. Care is aimed at bringing your current state back toward your own nature, rather than toward an equal measure of all three, which is why two people with the same diagnosis may receive very different recommendations.
Like increases like
The guiding principle is that like increases like, and opposites restore balance. Dry, cold and irregular conditions increase Vata, so warmth, oil and a steady routine settle it. Hot, sharp and intense conditions increase Pitta, so cooling foods, moderation and real rest calm it. Heavy, slow and cool conditions increase Kapha, so lightness, warmth and movement lift it. These qualities apply to food, weather and activity, and just as much to the pace of a workday or the tone of a conversation.
Digestion, where the doshas meet
Ayurveda places digestion, or agni, at the center of health, and each dosha leaves its mark there. When Vata dominates, digestion tends to be irregular, with appetite that comes and goes, gas and bloating. When Pitta dominates, digestion is sharp and strong, sometimes to the point of acidity or loose stools. When Kapha dominates, digestion is slow and heavy, and a meal can sit for hours. Balanced digestion, steady and comfortable, is one of the clearest signs that the doshas are in their proper relationship.
Time and place
The doshas also move through the day, the year and a lifetime. Childhood carries the qualities of Kapha, adulthood those of Pitta, and the later years those of Vata. The seasons follow the same pattern, but they should be read from the climate where you actually live rather than from a calendar. An autumn in the Sonoran Desert is not the same as an autumn in the Rocky Mountains, and the same principle asks for different practices in each. Ayurveda calls this desha-kala, attention to time and place, and it is central to how I practice.