Wise advice on control

The best thing about emotions is that they can be managed and directed - Dr Daniel Goleman
This quote means our emotions aren't just random, automatic reactions. They're more like raw data or energy that we have the ability to channel and influence, rather than being controlled by them.

Wise advice on contentment

People with well-developed emotional skills are more likely to be content and effective in their lives, mastering the habits of mind that foster their own productivity - Daniel Goleman
At its core, this quote means that your ability to manage your emotions isn't a "soft skill", it's the hard skill that makes all your other skills work better. It's the difference between just being busy and being genuinely productive and content.