Though scientists don’t advocate for either nature or nurture, there are optimal methods in both that develop personality positively. As seen in a twin study, there can be separation at birth, but their genetics tell them that they are ‘twins’. When meeting their other twin they feel closer to them than anyone in their life. Genetics can influence development as they influence mental health. Diseases such as depression, anxiety, schizophrenia, Alzheimer’s, etc. are hereditary diseases. Though these are hard to predict/prevent, there are methods to create an environment that works to prevent mental health issues. Environment seems to be the ‘umbrella’ of mental health.