When Rabbi Yaakov Mordechai Poltova was on his deathbed, he remarked: \u201cI would give up 40 years of iskafya [spiritual self-refinement] just for the chance to do one more mitzvah.\u201d When word of this reached his close friend the Rebbe Rashab, he said: \u201cIndeed he\u2019s right. But it takes 40 years of refinement to come to such a clear realization.\u201d