It can be caused by either excessive tear production, insufficient tear drainage, or a combination of both. Epiphora can be acute or chronic, most likely everyone has experienced at some point the tearing and irritation that results whenever something gets into our eyes.
Assertive is defined as someone who is self-confident and strong willed, though sometimes domineering or pushy. An example of someone who may be assertive is a car salesman. The definition of assertive is something with a strong taste or smell. An example of a something with an assertive smell is an aged blue cheese.
Assertiveness may be practiced in an unbalanced way, especially by those new to the process: [One] problem with the concept of assertiveness is that it is both complex and situation-specific. ... Behaviors that are assertive in one circumstance may not be so in another.