Before Neha Mehrotra became a mother, she didn't think having kids would have a big impact on career. "But as I became a parent, I realized it has a massive effect, and you need to re-carve yourself in your personal life and in your career," Mehrotra, 32, tells CNBC Make It.

She had her first daughter 6 years ago, took a 3½ month maternity leave, and returned to her work in-person five days a week as a full-time student and researcher. Her mental health took a hit — reporting onsite and having to be productive on a specific schedule changed how she showed up at work, for herself and for her family.