
See here also

"Lest you wonder at the many centuries that have gone by without the redemption of Jerusalem and Israel, do not forget that the Torah itself - the very purpose of Creation - was not given to man until 2448 years after Creation. That God sees fit to delay is not cause for despair (Siach Yitzchak)."
"Whoever partners with Hashem in his pain" means somebody who is concerned about Hashem's honor and keeps his problems between him and Hashem. And that person is truly great. When a great man experiences trouble or pain, he doesn't even want the ones around him to know about it. As the Chovot Halevavot said: "החסיד דאגתו בליבו וצהלתו בפניו" -The pious person keeps his worry in his heart and a smile on his face. Someone who is worried about the honor of Hashem says to himself, "I know what Hashem is doing to me is for my best; I know He loves me; I know He only wants my good. Other people may not fully understand this. I don't want them to think negatively of Him."