Being yourself is important, for if one were to try their best to fit in and ignore their heart's desires, they'd be lying to themselves and could possibly develop depression. Being yourself helps you stay original and allows you to feel free. No one wants to be kept in a box just so they can fit in. No matter what others say, it's important to stay true to yourself and love yourself.
The impact that the Nigerian Civil War has had on Jonathan's point of view is that he feels lucky if his family is alive and has access to the basic necessities of life.