This is going to sound odd coming from Salary.com, but it’s not always about the money.
I mean yes, money is good. We all need it to live and getting paid what you’re worth is important. But sometimes people feel pressured to leave jobs they love because they don’t feel they can turn down the pay increase the new position brings. Or they take a job they know will destroy their work/life balance when they’re trying to raise a family, simply because it’s more lucrative.
Sometimes you just have to trust your gut instead of your wallet, and realize money isn’t the end all be all. Then refer to #6 about happiness.