There’s no doubt about it: Robin McGraw is an overachiever.

A constant fixture on ‘Dr. Phil,’ her husband’s television show, since it’s 2002 debut, Robin’s also a best-selling author, noted philanthropist and sought-after motivational speaker.

But if you ask Robin, 60, what she’s most proud of, she’ll tell you it’s her loving family.

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Robin and Phil in May 2008.

“I truly believe I was put on this Earth to be a wife and a mother,” Robin shares with ‘Closer.’

Married for 38 years, she and Phil, 64, have two sons, Jay, 35, and Jordan, 28. “They are both amazing young men,” says Robin, who is equally as adoring of her two grandchildren, Avery and London.

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“It’s just an extension of the pure, complete love that I have for my children,” she says.

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Robin, Phil with their sons and daughter-in-law.

Being a grandmother, Robin says, is like a reward for being a hard working parent.

“[Parenting] is a heavy job and it’s an important job,” she said. “But when you are a grandparent, you don’t have to worry about any of that – it’s all reward!”

To read the full story on Robin pick up the new issue of ‘Closer Weekly,’ on newsstands now!