Do not worry by yourself

After all, it is all God's doing.
Therefore, you should not just worry by yourself.

...Jesus said to them, "Have you never read in the scriptures:
'The very stone which the builders rejected
has become the head of the corner;
this was the Lord's doing,
and it is marvelous in our eyes'?
Therefore, I tell you, the kingdom of God will be taken away from you and given to a nation producing the fruits of it." (Mat. 21:42-44)

This is God's doing.
If his goal is clear and he is very serious about the goal, surely he will guide us to accomplish that goal. If he is very serious about creating one family under God, then he will help all of us to be the people who will live as one family under God. (at this point I find myself very far from the expected level) So, it is a very necessary process in order to achieve that goal. And of course you need to be concerned about the whole, but first you need to be serious about what is your role looking from "God's perspective" in this whole picture--especially your role to create yourself as that person. You have a lot to do, and in a way, it's a long way to go.

However, as long as you hold on to God and do everything together with him, there is always a hope.