Megan Sauer

This story is part of CNBC Make It's Six-Figure Side Hustle series, where people with lucrative side hustles break down the routines and habits they've used to make money on top of their full-time jobs.

IT analyst Leena Pettigrew brought in six figures of revenue in one year selling houseplants online. The side hustle takes about 20 hours per week, she says.

I.T. analyst Leena Pettigrew brings in an extra six figures per year selling plants online. It's a low-stress side hustle, she says — here's how she built it.

In 2017, Leena Pettigrew was gifted her first houseplant — a golden Pothos, notoriously easy to care for — and killed it.

Netflix co-founder Marc Randolph may be among the few people who credit a demotion to their company's success.

Netflix's Marc Randolph stepped down as CEO after a tough conversation with his co-founder, Reed Hastings. It was the smartest decision he made at the company, he says.

The next time you catch yourself nodding along to something you disagree with, stop and calmly enter the argument instead.

You don't need a quiet, harmonious household to raise the next Steve Jobs or Frida Kahlo.

Some people think asking questions — to friends, peers or bosses — can make you look weak or insecure.

Stanford University lecturer Matt Abrahams says questions can help you gain influence at work and in life — as long as you know the right ones to ask.