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.

My advice was to start a policy of making reversible decisions before anyone left the meeting or the office. In a startup, it doesn't matter if you're 100 percent right 100 percent of the time. What matters is having forward momentum and a tight fact-based data/metrics feedback loop to help you quickly recognize and reverse any incorrect decisions. That's why startups are agile. By the time a big company gets the committee to organize the subcommittee to pick a meeting date, your startup could have made 20 decisions, reversed five of them and implemented the fifteen that worked.

People talk about getting lucky breaks in their careers. I’m living proof that the “lucky breaks” theory is simply wrong. You get to make your own luck... The world is run by those who show up…not those who wait to be asked.

The world is run by those who show up not those who wait to be asked.

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.

Build and they will come’ is not a strategy, it’s a prayer.

Using the Product Development Waterfall diagram for Customer Development activities is like using a clock to tell the temperature. They both measure something, but not the thing you wanted.