Mark Cuban

Mark is a serial entrepreneur, angel investor, and avid sports fan, with a net worth of $3.9 billion. Mark owns the Dallas Mavericks and is a permanent panelist on ABC’s Shark Tank, where he’s personally invested in over 70 startups.

On his morning routine.

The first thing I do is get up and see my kids before they go to school, sometimes driving them when needed. Then I grab my decaf coffee and Alyssa's healthy cookies.

I have the same routine every morning. Then I start my emails and go through them while CNBC is on the TV.

On his best advice.

My advice is to know your business cold. Know your industry cold. Be a great salesperson and always do the right thing.

The best entrepreneurs take the time to learn & understand their customer’s business and how their product can make that business better.

Selling is not convincing, it’s helping.

If someone’s product reduces another’s stress, they’re a good salesperson.

On prioritizing email.

To protect my time I rarely do meetings.

I do all I can via email, which lets me have complete control of my time. It’s just more efficient.

Most importantly, I have a searchable record I can go back to.

Finally, in terms of scheduling time, my priority always goes to my family.

On how to de-stress.

I focus on three habits. One, I work out. That can be one hour on an elliptical, playing basketball, or taking Rise Nation’s VersaClimber class.

Second, I read. Right now I’m reading The Storytelling Edge, The Once and Future Worker, and The Great Revolt.

Third, I play with my kids. Pretty simple stuff.

On sticking to core values.

I try to be true to myself all the time. What I mean by being true to myself is to be nice.

Take care of your customers. Don’t take shortcuts.

I always come back to this, be nice.

On catching a game before bed.

I'm usually in bed by midnight. Before I’m in bed, I try to get on the elliptical while I'm watching NBA games.

Then I wind down and get to sleep. If I haven't worked out that day, I'm usually a little grumpy.