Your diet isn't just food — it's everything you consume: what you watch, listen to, read, and who you spend time with.

Meghan's story is a great example. She watched the Today Show every morning, calling it "background noise." But without realising it, she was comparing herself to perfect-looking TV personalities — and it was quietly destroying her confidence in high-stakes finance meetings.

The CNBC effect shows the flip side: finance professionals who have market news playing all day absorb knowledge constantly, almost by accident.

The big lesson:

• Bad information sneaks up on you slowly
• You won't always feel it hitting you right away
• Without actively filtering inputs, your mood and mindset suffer

Start asking yourself every day: what am I feeding my brain? Be aggressive about saying no to information that doesn't serve you.