Be Positive (Korean: 긍정이 체질; RR: Geungjeongi chejil; lit. 'Positive Constitution') is a South Korean web series starring Doh Kyung-soo, Chae Seo-jin and Lee David. The web drama was produced by Samsung, and intends to send a message of support to the younger generation. The drama aired on October 31, 2016 at 17:00 (KST).^{[1][2][3][4][5][unreliable source?][6]} The web drama started airing on JTBC2 on March 1, 2017.^[7]

A story about Hwan-dong (Doh Kyung-soo), a film major who is preparing for his graduation project as a movie director. His script wins a grand prize, but he faces difficulty after difficulty while trying to finalize the film. He asks his ex-girlfriend Hye-jung (Chae Seo-jin) to play the main role in his production. She is understandably surprised at his bold request but in any case, she agrees. He completes his production with success.

• Doh Kyung-soo as Kim Hwan-dong^[8][9]

A film major who aspires to be a film director.

• Chae Seo-jin as Bang Hye-jung ^[10]

Hwan-dong's ex-girlfriend who was quite a successful actress once.

• Lee David as Hwang In-guk^[11]

Hwan-dong's best friend who dreams to become a film producer.

• Kim Jong-soo as Professor Ma
• Kim Eui-sung as Hwan-dong's father
• Nam Gi-ae as Hwan-dong's mother
• Heo Joon-suk as Noh Seung-boo
• Unknown as Kim Han-joo

It was reported that Be Positive became the second most watched web drama ever with 21.83 million views in just two weeks of its release, following Falling for Challenge (which was also produced by Samsung and starring D.O.'s bandmate, Xiumin), which has over 24 million views.^[12][13] On November 22, it was announced that the web drama surpassed 30 million views, making it the fastest web drama to reach this number of views within 18 days from its release, making it the most watched web drama of all time.^[14][15] As of December 30, 2016, the drama's views from Naver, Daum, Facebook and YouTube surpassed 50 million views. The web drama became the most watched in 2016 on Naver.

• Be Positive at IMDb