Sania's mantra to being the world's best is...

An ecstatic and thankful Sania Mirza on Monday shared her joy at becoming the World number one in tennis doubles by doling out advice to her many young fans.

- Congratulate World No 1 Sania Mirza

"I am humbled to be the first woman who has achieved this and I strive to keep working hard for as long as I play.. A big hug to all of you," Sania said on Twitter.

"One last thing I'd like to tell all the young girls-BELIEVE- believe in yourself so strongly that the world can't help but believe in u too," she added.

- Sania Mirza seals historic World No 1 rank

The tennis ace also thanked her family, friends, coaches and supporters who believed in her.

"I wanna thank my family,my loved ones,friends,my coaches over then years,my partners and u guys who believed in me and supported me," Sania said.

"All these years..this is a dream come true and I dedicate this back to u guys. I also wanna thank the ppl who didn't believe in me. You just pushed me harder and made me more determined to fulfil my dreams," she added.

Sania and her Swiss partner Martina Hingis beat the Aussie-Croatian pair of Casey Dellacqua and Darija Jurak 6-0, 6-4 on Sunday to win the Women's Tennis Association (WTA) Family Circle Cup.