Supermodel Heidi Klum says she is a "control freak" and is constantly making lists to prioritise her life to ensure her days go smoothly.

"I'm quite a control freak, and I like to stay on top of things, so I write a lot of lists too, to make sure I don't forget anything. I make a list before I go to bed, and when I get out of the shower, I even make lists when I am getting a massage," she told dailymail.co.uk.

"I have to be incredibly organised. All my children have different interests, different friends, so there are playdates, sleepovers, football, karate, dancing," she added.

The 41-year-old supermodel, who has Helene, 10, from her relationship with Flavio Briatore, and Henry, nine, Johan, eight, and Lou, five, with her ex-husband Seal, has to be especially organised when it comes to her kids and even works out a colour-coded timetable on her computer to keep track of the youngsters' busy schedules.

"There's always a lot of scheduling and with my work on top of that. I have to plan everything in advance. Running a tight ship and having a really solid schedule is the only way it works for me.

"On my computer I have a calendar, and everyone and everything -- my work, each of my kids, holidays -- has a specific colour. It looks like a multicoloured rainbow of madness and no one understands how I can make sense of it. But it really works for me," she said.