NCP chief Sharad Pawar penned an emotional letter to his late mother Shardabai Pawar on the occasion of Diwali. In his letter in Marathi, which he posted on Twitter, the veteran politician credited his mother for instilling good values in him. "I apologies for the delay in writing this letter. But I was busy the last year due to elections. The UPA lost the Lok Sabha elections, and some senior colleagues also left the party. It was also a though task to win the Vidhan Sabha elections,” Pawar wrote.