I'm a shy introvert who now operates a multimillion-dollar business - here are 3 tricks that boosted my confidence

• Luisa Zhou has built a career around teaching people how to start their own six-figure-plus businesses working for themselves.
• When she started out on her corporate career, she was an introverted and "unnoticed" employee. But by the age of 30, she was the owner of a multimillion-dollar business.
• What helped her the most: She focused on sharing her accomplishments, changing how she thought of herself, and developing confidence as a skill.
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"After working with you for years, I still have no idea if you are actually good at your job."

A coworker kindly shared that with me a few years into my corporate career.

I was shocked but I shouldn't have been. As a not-so-confident introvert who found it difficult to speak up in meetings or talk about my accomplishments without feeling like I was bragging, I was at a disadvantage when it came to sharing my wins. It also didn't help that growing up, I'd been taught to be humble and let my work speak for itself.

That moment was a huge wakeup call. I realized that if I didn't want to spend the rest of my life being overlooked, something - namely, me - needed to change. Here are three tactics that helped me develop my confidence and go from unnoticed employee to the owner of a multimillion-dollar business before 30.