A Question - A paradox of emotions

This time of mourning in the Jewish calendar is quite difficult for me. Most people know me as a natural optimist. I constantly grapple to find the right way to mourn the loss of our temple. One thing is especially hard for me to grapple with, and I hope some of you can provide me with some insights in the comments section.

During the 3 weeks of Ben Hametzarim, we mourn the destruction of our temple. Yet, during those three week, we are also hopeful that it will once be rebuilt.

How can we combine both of these seemingly contradicting feelings?

The Gemara in Makkot 24b relates a famous story:

Again it happened that Rabban Gamliel, Rabbi Elazar ben Azaria, Rabbi Joshua and Rabbi Akiva went up to Jerusalem. When they reached Mt. Scopus, they tore their garments. When they reached the Temple Mount, they saw a fox emerging from the place of the Holy of Holies. The others started weeping; Rabbi Akiva laughed.

Said they to him: "Why are you laughing?"

Said he to them: "Why are you weeping?"

Said they to him: "A place [so holy] that it is said of it, 'the stranger that approaches it shall die,' and now foxes traverse it, and we shouldn't weep?"

Said he to them: "That is why I laugh. For it is written, 'I shall have bear witness for Me faithful witnesses--Uriah the Priest and Zechariah the son of Jeberechiah.' Now what is the connection between Uriah and Zechariah? Uriah was [in the time of] the First Temple, and Zechariah was [in the time of] the Second Temple! But the Torah makes Zachariah's prophecy dependent upon Uriah's prophecy. With Uriah, it is written: 'Therefore, because of you, Zion shall be plowed as a field; [Jerusalem shall become heaps, and the Temple Mount like the high places of a forest.]' With Zachariah it is written, 'Old men and women shall yet sit in the streets of Jerusalem.'

"As long as Uriah's prophecy had not been fulfilled, I feared that Zechariah's prophecy may not be fulfilled either. But now that Uriah's prophecy has been fulfilled, it is certain that Zechariah's prophecy will be fulfilled."

With these words they replied to him: "Akiva, you have consoled us! Akiva, you have consoled us!"

Are we not, during the three weeks, taking the approach of the other sages? (An approach which has been proven to be inappropriate)

Your thoughts would be appreciated.