"The entire Thai people, regardless of political ideology or different beliefs, (should) turn toward each other to find a peaceful solution for our country," Yingluck said in a New Year message on her official Facebook page.
Yingluck pledged not to give up working for reconciliation.
Thailand has been rocked by anti-government protests calling for the ouster of Yingluck's government which they allege was being remote-controlled by her polarising brother Thaksin -- a billionaire former premier.
The protesters have been demanding Yingluck's resignation since mid-October. The protests began after her government tried to introduce an amnesty bill that would have paved the way for the return of her brother, controversial former premier Thaksin currently in self-exile in Dubai.
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A rattled Yingluck has called snap polls, scheduled for February 2, after weeks of protests. But the demonstrators have dismissed the election and the opposition has refused to field candidates.
Protesters have further rejected another offer by Yingluck to form a national reform council intended to run alongside her government.