The Angels Over the Ten Plagues
In his Erev Pesach letter, Rav Shimshon explains that the angels who struck Egypt are also the ones charged with the future Redemption.
The rabbis of his time asked Rav Shimshon to explain an obscure passage attributed to the Arizal. It speaks of the names of the angels appointed over the ten plagues that struck Egypt. His reply became the letter that many Jews read before Pesach. In it he explains that the same angels who carried out the plagues are also entrusted with the future redemption of Israel. The Exodus and the final Redemption are linked by a single chain of heavenly forces. He draws out their meaning through the numerical values of the angels' names. He also explains, in the same letter, the old mnemonic for the plagues, Detzach Adash B'achav. According to tradition, whoever reads the letter is protected from misfortune throughout the year.
Source: Maamar Sod Etzba Elokim (the Erev Pesach letter), as printed in many Haggados and machzorim
On Pesach we remember the Exodus, and Rav Shimshon reminds us that the same heavenly forces that freed us then are working toward the final Redemption. Before Pesach this year, set aside a few minutes to read the letter, or any account of the Exodus, with this thought in mind. Then notice one place in your own life where you feel stuck. Remind yourself that Hashem has freed us before and will again, and let that hope lift you.