Who we are?

First of all i'd love to thank @italki team to provide me this service, i am new here, all i can see here is people learning language's by helping each other, its good, my title of discussin is a well known question, but till now i didnt get a perfect answer, sometims i think who we are, for what we are here, how long it will take etc, why we learn too much from outside instead of knowing who we are from inside, do you realy claims that you know about yourself everything, like for what you made, for what you are doing this, isn't that people said so i am doing this and made for this, its about what you feel for life, why expecting too much from outside even you have everything inside that u will need in your life.(think less live more)