Actress Mayim Bialik is struggling to balance her personal and professional life since splitting from her husband, insisting it's tough to be a single mum.

The Big Bang Theory star filed for divorce from her husband of nine years, Michael Stone, last year (12), and they are currently sharing custody of their two kids, Miles, six, and Fred, four.

The actress and her soon-to-be-ex are doing their best to co-parent, but Bialik, who has yet to hire a nanny, admits it hasn't been easy.

She tells People magazine, "My life is like The Cat in the Hat (children's book): balancing the spinning ball, plates, a teacup. Everything is up in the air."

And to make matters worse, the 37 year old is still struggling to overcome the pain of the breakdown of her marriage, adding, "(The divorce) was sad and scary. It's a tremendously painful thing."

To cope with the sadness, Bialik, who grew up a Mormon, has relied on her faith to get her through the hard times: "I think a lot about the notion that there is always tomorrow... They say, 'Man plans and God laughs'. That really describes my life right now."