The Spice Girl told Reveal magazine that although she loves being a mum to 3-year-old daughter Scarlett, it can be very tough.
''She is like a ray of sunshine every day. I think the best part of my day is waking up in the morning, getting up and going to see her, then having breakfast together," the 'I Turn To You' singer said.
"There's no doubt it's the hardest job in the world and there are moments when it is so, so tough, but you can't get over how brilliant it is having a new person in your life who is so young and energetic.''
Mel explained that now Scarlett is starting to form her own opinions, she is finding reasoning with her daughter particularly tough.
''She's 3 now so she's quite opinionated," she said. "It's that very difficult time of finding out who you are as a parent, how you discipline and how strict you are. That's the kind of battle you have to face when they're a toddler.''
It was recently announced that Mel C will be starring in a forthcoming production of Jesus Christ Superstar alongside Chris Moyles and Tim Minchin.
A musical based around the music of the Spice Girls will open at London's Piccadilly Theatre in December.
Watch a video of Mel C talking about the Spice Girls musical Viva Forever below: