Drew Barrymore suffered from postpartum depression

She shared: "I didn't have postpartum the first time so I didn't understand it because I was like, 'I feel great!'

"The second time, I was like, 'Oh, whoa, I see what people talk about now. I understand'. It's a different type of overwhelming with the second. I really got under the cloud."

And whilst the 40-year-old star hated how she was feeling at the time, she looks back on it positively as it helped her take "one thing at a time".

She added: "It's really important. I was in the kids' class with Frankie and Olive this morning and I started fretting about some piece of work news that was just stressful.

"You know, in like the Broadway Babies class and it's the one-hit wonders day, and they're singing I don't even know what song, and we're all doing our lollipop drums and I just thought, 'Save it until after class.' One thing at a time."

Drew admits she made a lot of changes to suit her new life as a parent and couldn't be more thankful about the blessings she has been given.

She added to PEOPLE magazine: "I just got right on the idea of, where do I need to be the most? Fifty-fifty would be ideal but life doesn't work like that. Life is messy.

"It was just really challenging and I felt overwhelmed. I made a lot of decisions and I definitely changed my work life to suit my parenthood."