> Still, being a part-time graduate student while running a business wasn’t easy. I forgot the meaning of ‘spare time’ for a while, and my company took a financ

> Still, being a part-time graduate student while running a business wasn’t easy. I forgot the meaning of ‘spare time’ for a while, and my company took a financial hit because I could not work as much as I had before, and had to turn down clients. It's somewhat different if you can get a PhD part-time and have the income of a business to support you. By all means, get a PhD on the side if you can make it work.