Contrary to theories in psychology explaining that middle children tend to be insecure and self-conscious because they do not experience the same level of attention as the first- born child and the last-born child, being a middle born child has an upside.
One, middle born children do not experience the same pressures placed upon the first- born child. In most cultures, the first-born child feels the pressure to finish school and take control of the family business or manage any other affairs of the business. Middle born children do not feel the pressure and often given the choice to be whatever and whoever they want to become.
Another, middle born children do not experience excessive pampering to the extent that they become too dependent on their parents, whether willingly or unwillingly. Middle born children experience moderate discipline and freedom resulting to a more or less disposition towards self-accountability.
I grew up well. I had my own bouts of rebellion as everybody else did. But, I am happy with what I have become, which I owe to how I was raised. : )