A thank-you note got me my first real job. As a newly minted college graduate with no work experience, I was having a tough time finding my first grown-up gig. I thought I’d never get a break until I ...

Add Yahoo as a preferred source to see more of our stories on Google. Photo credit: Carol Yepes - Getty Images Never underestimate the impact that a simple "thank you" can have on another person.

As much as I was obsessed with Christmas and birthdays (read: gifts) growing up, I dreaded the mom-mandated thank-you letters I was forced to write after. And if you say you didn't, you're lying. The ...