There are two main factors which affect personal development and they are environment and genetics or heredity.
Over the years researchers have tried to prove whether it is our genes or our environment.
The only answer that has been determined so far is that both of them contribute greatly in shaping us.
This is when we tend to weigh nature with nurture.
In our early years, our parents and any other close relative are the ones who will make us who we will be by the time we reach five years.
When we reach that age of going to school then our personality development will come about from our classmates and the people we spend most our time with, The group that we hang around.