Growth

To develop or expand own self means to go beyond current boundaries or limits of own capacity.

It means stepping in realms where one would feel unconfident, uncomfortable or even fearful.

As long as staying in an area where one feels comfortable, there is no hope for development and expansion.

Growth requires to overcome fears while taking certain pains.

But, fears and pains will gradually cease, as one goes on trying and strengthen oneself.

This itself is the process of development or expansion.

With a little more courage to step in the new realm, one can develop own self while pursuing the well-considered course of action.