Selling Sunset’s Jason Oppenheim Reveals What He Does to Stay Focused and Productive — And It Only Takes 30 Minutes a Day.

Opinions expressed by Entrepreneur contributors are their own. Being an entrepreneur is not an easy task at all. When you choose a path of fending for yourself in business, the only person who can be blamed for failures is yourself. The entrepreneurial lifestyle requires a large amount of patience, perseverance and most of all, focus.…