I think perhaps the sentiment from the Gemara Bava Basra (at least the concept) sums it up: Life goes on, and it must, but we make small changes in our routine so that it is always on our mind.
(Paraphrased)
“When the Beis Hamikdash was destroyed a second time, there was an increase in the number of perushim among the Jews, who decided to not eat meat and to not drink wine. Rabbi Yehoshua joined them to discuss their practice. He said to them: My children, for what reason do you not eat meat and do you not drink wine? They said to him: Shall we eat meat, from which korbanos are sacrificed upon the מזבח , and now the מזבח has ceased to exist? Shall we drink wine, which is poured as a נסכים?
Rabbi Yehoshua said to them: If so, we will not eat bread either, since the מנחות that were offered upon the מזבח have ceased. They replied: You are correct. It is possible to subsist with produce. He said to them: We will not eat produce either, since the bringing of the ביכורים have ceased. They replied: You are correct. We will no longer eat the produce of the שבעת המינים from which the ביכורים were brought, as it is possible to subsist with other produce. He said to them: If so, we will not drink water, since the ניסוך המים has ceased. They were silent, as they realized that they could not survive without water.
Rabbi Yehoshua said to them: My children, come, and I will tell you how we should act. To not mourn at all is impossible, as the decree was already issued and the בית המקדש has been destroyed. But to mourn excessively as you are doing is also impossible, as the חכמים do not issue a decree upon the public unless a majority of the public is able to abide by it….Rather, this is what the חכמים said: a person must leave over a small amount of his house without plaster to remember the חורבן. One making a סעודה should leave over a minor dish that he doesn’t serve זכר לחורבן. A woman who puts on jewelry should leave over one item that she doesn’t wear זכר לחורבן etc.”
