Traditionally, the mind-body connection related to the notion that emotions, thoughts, social activities, spiritual practices, and behavior can affect our health. Today, thanks to some intrepid geneticists, we not only know this is true, but also the reason it occurs.

Ever since the discovery of genes, scientists have followed the path of genetic disposition and have strived to fight or prevent disease based on an individual’s genetic code. But, the new science of epigenetics has scientists looking at a much bigger picture.

Let’s take a look at what epigenetics means. Genetics is the study of heredity, or how the characteristics of living things are transmitted from one generation to the next. Every living thing contains the genetic material that makes up DNA molecules. This material is passed on when organisms reproduce. The prefix epi is derived from a Greek word that means “on, upon, at, by, near, over, on top of, toward, against, among.” Now, when we combine the prefix epi with the word genetics, we are referring to what occurs upon, over or on top of the expression of genes.

Biologists studying epigenetics understand that environmental factors, such as stress and nutrition, to name a few, affect your genetic expression. And, what these biologists know with certainty is that the expression of your genes, not the genes themselves, dictates whether you develop certain diseases or age prematurely. In other words, one may have the “obesity gene,” but if nothing in the environment triggers that gene, it will never express as obesity.

This means that how you respond to what’s happening in your environment—whether it’s stress at work, final exams, or emotional or physical abuse—has a far greater effect than the event itself. In other words, when it comes to your body, perception is reality.

If you are chronically forlorn, for example, this negative emotion will influence the expression of your genes and thus impact your risk of developing disease. Conversely, there are many obese people, and even heavy smokers, who lead optimistic, balanced lives who are in much better health than their lean or non-smoking, but pessimistic, counterparts.

Dawson Church, in his book, The Genie in Your Genes: Epigenetic Medicine and the New Biology of Intention, reports that heart surgery patients who have a strong social support network and spiritual practice have one-seventh the mortality rate of those who don’t.

So, how do you start feeling optimistic when you’re feeling everything but? Well, you can start by recognizing that pessimism is nothing more than a habit—a learned response. And, the good news in that is that habits can be changed.

Habits are formed by the brain when we do something consistently over time. The brain recognizes the pattern and builds a neuropathway. Then, whenever the situation presents itself again, your brain takes that same neuropathway, which is now the path of least resistance. Neuropathways that are used regularly get stronger, and those that aren’t used at all disconnect.

So, the trick to changing habits is consistently doing the positive, new behavior you want until it forms a new neuropathway. Sound like a lot of time and effort? It doesn’t have to be. Since the brain doesn’t know the difference between real and imagined, and because time doesn’t exist at the other-than-conscious level of the mind, visualization can help you form new habits quickly and comfortably. This is where braintapping comes in. With proven technology-enhanced meditation that uses brain wave algorithms and visualization, you can quickly form the positive new habits that will give you a happier life and help safeguard your health.

And, if that’s not enough to convince you, a May 2014 study by the Institute of Science in Society showed that the relaxation response, as achieved through meditative practices, has been shown to positively affect at least 2,209 genes.