And, lastly, although your agent might indeed admire your talent and share with you lofty creative and financial goals, your agent is not inclined or obligated to care about them as much as you do. In fact, no one cares about your career as much as you do, which means the burden of worrying about your artistic aspirations, income, reputation in the industry, and level of personal and professional satisfaction rests entirely on your shoulders. These three points aside, what every writer needs to understand is that the very nature of the artist's position in society contributes to the asymmetry of the relationship between writer and agent. Because the marketplace holds the power to validate one's work, it retains the ability to mirror back to the writer either affirming or shaming messages about the writer's worth. The reality is that this primarily fiduciary arrangement can't tolerate such burdens.
Writers expect too much in the way of esteem-building, validation, and empathy.
The wise writer understands this, if only theoretically, and should at least strive to keep the relationship with an agent in context. Maybe it will lessen the blows, whatever they are and whenever they come. Then again, maybe it won't. On the other hand, unlike your parents, if you don't like your agent, you can always try another one. You'll probably discover that each new agent is just different, not better, than the last.