I don't normally try to stay trim over the festive period - a nice little shift dress and some tights always hides the Christmas bulge.

A lot of the time, people think I have a high opinion of myself when I really don't.

You can't judge others. You never know what's going on in their mind or body.

When I was at primary school, around seven years old, I was underweight, so I'd be back and forth to the doctors to get weighed. It was a lot to do with being a twin. Jo was healthy, but I just couldn't put on weight.

I was a bit of a sickly child!

I've always got time for a relationship.

Being engaged was the best feeling in the world - that someone wants to spend the rest of their life with you.

Sometimes you think things are going to be forever, and then... of course, they're not.

The only person that can define you is you. Nobody else can.

I'm not a fitness buff.

I love burgers, and I love chips.

The anxiety I get more when I'm not working. So actually work, for me, takes away my anxiety, and doing live TV, in that moment when you're consumed by something else, it takes away all of my thoughts. It distracts you!

Fame doesn't make you happy.

The best advice is to exercise; then you can eat what you want!

My body's weird and bent in different ways, but it's handy for the tango!

Being 'Strictlyfied' is the opposite to who I am normally, but on this show, you definitely have to go with the flow.

I don't think 'X Factor' would put someone in front of the camera on purpose if they were ill. I don't think that's something they would do. There's psychologists who test out all the contestants before they go on.

I had three brilliant years on 'The X Factor,' and it was one of the best jobs I've ever had. 'Strictly' is completely different; it's a whole different show - I'm dancing. It's not presenting. But this is one of the best things I've done - ever.

We've all had relationships; I've had them in my past, and I don't look back on them and think, 'Ah, that was a mistake.' I take what I learnt and move onto the next one.

When your mates break up with their boyfriends, it's hard to see, but not all relationships last forever. Let's be realistic.

I don't fear being single at all.

Love comes in all different shapes and forms - from friendship and sisters and mums - and as I've got older, I've definitely learned that some of my happiest times have been when I've been on my own.

There's so much pressure to be at a certain level in your job and at a certain place in your life, but if everyone was doing things at the same time, then life would be so boring. Everyone reaches different stages at different times.

I live hour by hour, day by day. I can't even plan a holiday. I go on holiday, like, the day after I book it.

Hot yoga is something that I forced myself to get into. When I first did it, I thought, 'How on earth am I going to get through an hour and a half of this?' because I was so hot.

The best fitness tip is that you don't need to be out of breath and do cardio to get in shape.

Cutting sugar made the most difference to my body. It's the devil. It's addictive, and it's in so many things you wouldn't even think of. Sugar is put in sauces, breads, and yoghurts. It's not always obvious, but so many things are packed in sugar.

Your morning sets up the success of your day. So many people wake up and immediately check text messages, emails, and social media. I use my first hour awake for my morning routine of breakfast and meditation to prepare myself.

Your style can be an artistic part of your personal leadership journey.

I admire people who operate from a place of love and who have gone through the rigorous process of finding and articulating their purpose, whatever it may be.

Trust your instinct. And if you can't tell what your instinct is telling you, learn how to peel back the noise in your life that is keeping you from hearing it.

In high school, I interned at my mother's restaurant and learned the small-business ropes. It was really instructive and taught me to switch contexts quickly, as I contributed to everything from managing the reception desk to building their website.

Give yourself time to digitally detox from your constantly connected life, and keep your phone away from your bed.

Don't let the good days get to your head, and don't let the bad days get to your heart.

I've always known I've wanted to build companies that have a social impact.

When you experience difficulty at work or in your life, instead of looking back on it as something that was really challenging, look at it and ask yourself, 'What wisdom did I learn from that?'

You are bigger than your self-doubt. Remind yourself of that each and every day.

You can't value others until you value yourself.

You're a smart person. You're going to figure out where you can be more effective and more efficient with your own resources, and that's going to put more of an investment and emphasis on your future.

You're actually making the rest of your day productive by spending 30 minutes reviewing your to-do's, prioritizing them, and ruthlessly removing things that shouldn't be there.

Productivity doesn't have to be complicated. It can be easily boosted through a manageable combination of the right tools, resources, and habits to make the most of your time.

I've started to really nurture a bedtime routine, which, for me, starts with caffeine-free tea, usually rooibos or jasmine tea, something soothing, very fragrant, just a reminder to get back to your senses.

Taking care of myself used to be at the bottom of my list, but I'm all about wellness.

I used to be an awful asker. I was the 14-year-old who didn't correct the family I would babysit for when they gave me less money than we had agreed to, because it felt rude and scary.

Having women who are already successful take the leap of faith to help younger women is critical.

I'm nicknaming millennials 'the purpose generation' because we're making so many decisions.

Just displaying your resume online, which LinkedIn lets you do, isn't enough.

Run focus groups. Do whatever you need to do to get 8 to 10 people together in a room and put your product in front of them. Ask them how much they would pay for it and whether they would pay for it. It's really important to get user validation early and often.

Power is ultimately about the energy you emanate from within.

White is hands down my favorite color and the color I wear the most.