Amidah-Ki Tisa-Teshuva-Rav Nachman
Rabbi Nachman once spoke about those who are religious for it while and then fall away. He said that even the short time that they are religious is very dear to God, no matter what happens later.
It is written, “You have heartened Me with one of your eyes (Song of Songs 4:9).” God is speaking to the Jewish people, recalling the time they accepted the Torah. The Midrash asks why the verse says, “with one of your eyes.” It answers that the other eye was already on the Golden Calf (Shabbat 88b). Even when Israel accepted the Torah, they already had plans to stray. Still, the short time they were close to God was very dear to Him. He therefore said, “You have heartened Me with one of your eyes.” [Sichot haRan 123]
Many of us hesitate when reciting the blessing of repentance in the Amidah because we wonder how long our repentance will last. It is appropriate to recall the above lesson that even a short period of repentance is very dear to God.