25 Entrepreneurs Reveal What They Wish They'd Known Before Their First Startup

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meetup employees discuss new ideas

Daniel Goodman/Business Insider

Founding a company isn't for the faint of heart.

Every entrepreneur — no matter the size of their company — faces tough decisions and seemingly insurmountable struggles at some point in the process of getting their idea off the ground.

Think you have what it takes?

Rejoiner's Joseph Putnam teamed up with Grasshopper to ask more than two dozen founders for the advice and wisdom they wish they'd had before starting their first company. He gave us permission to share those insights. 

Now, meet some more inspiring people:

Silicon Valley 100

Mike Nudelman/Business Insider

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Jillian was most recently an enterprise technology editor based in San Francisco.  She started at Insider as an intern on the technology desk in 2013 and rose to a senior reporter position, covering Alphabet, Facebook, and ecommerce. After three years at the site, she left to spend time freelance writing abroad, before taking reporting positions at CNBC and then at Forbes, where she covered Alphabet, Silicon Valley culture, and artificial intelligence. She returned to Insider in March 2020 and worked on the enterprise technology desk until August 2021.  Jillian graduated from Syracuse University's S.I. Newhouse School of Public Communications with a degree in magazine journalism and information management and technology.