Forget meditation, forget ayahuasca ceremonies and mindfulness practice. Today, knowing yourself is as easy as swabbing your cheek. Home genetics tests like those offered by 23andme are becoming readily affordable — just $69 for a test kit — and they offer an unprecedented look at our personal blueprint.

It’s even possible today to study the genetics of your potential offspring before they’re born. So-called pre-implantation genetic diagnosis analyzes DNA from an embryo, when it’s nothing