Entrepreneur.com on whether Instagram’s new 15-second video function will be the end of Vine, which is owned by social media competitor Twitter. And Inc.com takes a look at an ancient Japanese principle that could be the secret to entrepreneur happiness.

The best way to finance:  The New York Times takes a look at whether startups are better off self-financing or raising money.

Backlash against credit service: The Wall Street Journal reports that small businesses are complaining that Dun & Bradstreet Credibility, a credit service company, has misled them with aggressive sales pitches.

Don’t burn out: Inc.com says applying an ancient Japanese principle to your schedule can keep entrepreneurs happy and productive.

Will Instagram kill Vine? Entrepreneur.com explores whether Instagram’s new video capabilities will destroy Twitter’s Vine.

Follow Gabrielle Karol on Twitter @GabrielleKarol