I was diagnosed with attention deficit hyperactivity disorder (ADD/ADHD) and obsessive-compulsive disorder (OCD) as an adult, but I don't remember a time when I didn't have them. Back in the 1960s, when I was growing up, my symptoms didn't have a name, and you didn't go to the doctor to find out.

I'm always in a hotel room, and I spend a good portion of my day setting it up so it's comfortable for me. Whether that means making paths out of towels so I don't touch the carpet or removing the comforters or just not touching things. Even sitting on a plane with a bunch of other people - it's really hard for me.

I once called construction companies to bid on an addition to the school library so that there would suddenly be people outside, measuring the building. 'Who authorized this?' the principal would ask. The answer: 'Howie Mandel.'

I once missed an appointment because I left my house, I locked the door. And then I thought, like anybody else, you know, 'I don't think I locked the door.' I just kept going back to the door. And I couldn't stop myself from checking and checking.

I've had plenty of good times and have settled peacefully into quite a boring existence that I love. I had enough fireworks and chaos. It is a blissful boring life, believe me.

Success isn't always going to be a huge contract; success is going to be if you just live out your purpose in life.

Overcoming fear is the first step to success for entrepreneurs. The winners all exemplify that, and the hard work and commitment they have shown underlines what is needed to set up a business.

I think that's the key for a good team, to work together like a family. It's something that I've learned over the years with the experience that I've gotten over 10 seasons.