SUCCESS Insider: Poshmark, College, Bob Iger, Ben & Jerry's

Thinking about leaving your your humdrum 9-to-5 job to start your own business?

If becoming your own boss or starting your own business has been at the forefront of your mind for quite some time, it may be best to hunker down and study the wisdom of those who have done it themselves. Business Insider talked to four professionals who quit their jobs to make it on their own.

These are the 10 books that prepared and inspired them to take the leap.

This week we have details on how to get your Poshmark side business off the ground, career insights from Disney CEO Bob Iger, and tips for engaging the community from the CEO of Ben & Jerry's.

The online resale marketplace and app Poshmark makes it easy for anyone to buy and sell preowned clothing on their phones. But the most successful entrepreneurs on Poshmark aren't just selling old clothes from their closets — they've turned side hustles into six-figure businesses.

Here's how to get your Poshmark business off the ground.

Success doesn't come overnight. In Disney CEO Bob Iger's case, his strategic leadership style is built on a foundation stemming from humble beginnings. Three principles helped govern his upward career trajectory from a high-school janitor at age 15 to one of the world's most influential CEOs.

Here's how he did it.

Employers in the tight US job market are increasingly hiring workers without college degrees. When it comes to the value of a college diploma, studies suggest that workers with a college education earn significantly more, but it doesn't matter where you go if you're a relatively wealthy white man. The return on investment is greater for wealthy white men, too.

Read more here.

Ben & Jerry's was a pioneer in linking profit with a social mission. The ice cream brand's CEO, Matthew McCarthy, explains how businesses can connect with talent and customers by engaging with social issues — while avoiding the common pitfalls that prevent many companies from even trying.

Here's how the company engages the community.

Read next