Sama dosha sama agnischa sama dhatu mala kriyaaha |
Prasanna atma indriya manaha swastha iti abhidheeyate ||
Being "established in oneself" in Ayurveda is the definition of health. That, in essence, means being balanced in one’s prakruti, or original nature. Any sickness, negative emotional state, or disease state is seen ayurvedically as an imbalance, or vikruti, a shift away from one’s innate nature. Your prakruti is the combination of elements in you at your birth. A modern translation might be termed your genome expression. This combination is also known as your dosha - which is a unique combination of space, air, fire, water, and/or earth. Important to note is that we are the microcosm of nature, which is the macrocosm, and these elements make up everything else in nature as well. These 5 elements are combined into 3 doshas which are vata (air and space), pitta (fire and some water), and kapha (water and earth). Essential to health is knowing your prakruti (a.k.a. your doshas) and living, as much as possible, in that balanced state.
In addition, being "established in oneself" (i.e. healthy) also means having balanced agni, or digestion and assimilation of nutrients and experiences, which leads to healthy tissues, or dhatus, and has an end result of healthy ojas, or vigor, vitality and contentment.
Health also includes healthy excretory functions -- urination, defecation, and sweat production all working in perfect order.
And, finally, "established in oneself", or health, includes a pleasant and contented state of mind, senses and emotions.
Seems like a tall order to create all of this in our fast-paced, stressful and hectic world. But, luckily, Ayurveda has time-tested diet, lifestyle, purification treatments and pacification therapeutics to create all of the above. If you're interested in holistic health, you've probably already heard of many of these techniques or practices, as almost any holistic health modality will find its roots in Ayurveda. But, the wonderful part about Ayurveda is this concept of health meaning "established in oneself". Not all health practices fit everyone. Each is tailored to the individual - to their doshas, dhatu, malas, their strength, their age, their mental state, and to the strength of the disease.
One way to start on this path to health is to determine your prakruti, or doshas. You can do that through pulse diagnosis and also through dosha questionnaires. You can find a lot of these online, and it's good to take a couple to cross check your results. One that I especially like is the Banyan Botanical's dosha quiz: https://www.banyanbotanicals.com/info/dosha-quiz/ They also have a lot of information and great teaching materials on what balance means for each dosha.