First step... who am I?

Perhaps this is the only real step in the process of it all as who we might be is in a continual process of change with all other change so from moment to moment, we might be fundamentally different.

If we don't know ourselves, how can we give our life a meaning? how can we influence in others positively?

This is the core of it with meaning, we can fill our lives with all that people expect us to and still remain unfulfilled. It has to come from within.

Hope all is well with you :)