Let out sadness:

The results of the bus­driver study can be explained by researchers, who find that negative feelings like sadness or anger only increase when we try to control them.

We feel bad when our appearance contradicts how we truly feel inside. We don't like contradictory behavior.

Respond cautiously：

Recently, scientists have been paying special attention to the benefits of caution. When you respond cautiously to an emotional trigger, you pause rather than react at once.

A cautious response to a negative event reduces sadness we experience.

Besides, it is associated with less anxiety, and may even carry physiological benefits.

Enjoy a mix of emotions：

Of course, the holidays will bring a mix of highs and lows, but the most important lesson to keep in mind is that this variety of emotions might be the best thing possible for your overall well­being.

In other words, sadness, anger, and other difficult emotions are nothing to fear. Just make sure you're balancing them with lighter experiences. And don’t forget to give yourself a break.

1) 这句话We feel bad when our appearance contradicts how we truly feel inside. 如何分析？就是这里contradicts how we truly feel inside我不懂？

2) "possible for your overall well­being"整个是后置定语修饰the best thing吗？还有，很不理解为什么用了现在进行时you're balancing？？？感觉这里应该是用一般现在时you balance才正确呀！很疑惑。