Startups are painful, stressful and at times demoralizing. You need to be a true believer in the vision of what you are doing. You need to passionate about it and love what you’re doing. If you don’t, there is no way you can sustain the hours, stress and disappointment. There’s no way you’re going to be able to convince investors, customers and most importantly recruit a world-class team if you not building something you think is going to change the world.

You need to ask yourself, ‘Where do you want to work: startups, mid-size or large companies?’ If you find yourself debating the ‘startup versus large company’ choice you’ve already chosen the big company. Entrepreneurship isn’t a career choice it’s a passion and obsession.

Disruption on the first day always looks like a toy.

Greatest risk is not development of new product, but development of customers and markets

At the end of the day, you can decide whether you want to be an employee with a great attendance record, getting promoted to ever better titles and working on interesting projects - or whether you want to attempt to do something spectacular - this be or do should be a question you never stop asking yourself - for the next 20 years, and beyond.

When you're gone would you rather have your gravestone say, 'He never missed a meeting.' Or one that said, 'He was a great father.'

Business plans are the tool existing companies use for execution. They are the wrong tool to search for a business model.