Jessica Biel, the actress says motherhood is the mainly challenging job in the world. The Total Recall star,the mother of 13 month year old on Silas Randall with her husband Justin Timberlake, loves being a mother but confessed it can be stressful at times.

"It's sometimes hard to find the words [to describe motherhood]. So amazing. So lovely. I'm over the moon.” She said

Biel added, “honestly, I would say motherhood [is the most difficult role I've done]. It's probably the most challenging job in the world, but also the most joyous."

"Justin is a funny, sweet and caring dad - everything and more. I'd call him the perfect parenting partner”-she further adding.