We should all yearn to merit getting up in the middle of the night to recite Tikkun Chatzot, where we mourn over the destruction of Beit HaMikdash (the Temple). We also mourn the concealment of the light of the true tzaddikim. It is also a very good time to mourn over our own sins and shortcomings, all of which are delaying the rebuilding of the Temple. We need to strive to see ourselves and our personal situations in the words of Tikkun Chatzot.
As per Rebbe Nachman, the time for Chatzot begins six clock hours after nightfall, regardless of the time of year, and lasts for two hours (Likutei Moharan I:149; also see Magen Avraham on Orach Chaim 1:2 and 233:1).
Now, depending on one’s location and time of year, there may not be six hours of nighttime. Also, many people are unable to function properly during the day if they break their sleep to recite Tikkun Chatzot. We can at least strive for and yearn to have the merit to get up at Chatzot. We can ask Hashem to help us.
On nights when we do not have to work the next day, we can at least try to get up, even once a week or once a month. There are a few Kollels in Israel (Kollel Chatzot and Kollel Chatzot Layla) where they get up every night to recite Tikkun Chatzot, to do hitbodedut (personal prayer), and to learn Torah until Shakhrit (Morning Prayers). We can pray for these holy men and also support them.
Another thing we can do until we have the merit to get up every night for Tikkin Chatzot, has been suggested in Rav Avigdor Miller on Tikun Chatzos – The Abridged Version, is that before we go to sleep, we can take a few minutes, sit on the floor [preferably by a doorway that has a mezuza attached, if possible], and think about what we are missing in our lives due to the destruction of the Beit HaMikdash. These few minutes are more precious than we can ever imagine.
Based on A Day in the Life of a Breslover Chassid, by Rabbi Yizchok Breiter