Do you need to be optimistic to get rich?

[Dien Rice]

A lot of "systems" seem to say that some type of optimism is important to get rich... There are a lot of "techniques" full of "pro-optimism" activities - whether it's visualization, or reciting some kind of daily "mantra", or even writing things down and putting the bits of paper in jars...

What do you think? Do you have to be optimistic to be successful?

Or is it just a way to sell more books...?

- Dien