Most people don't see it, but nearly everything in life boils down to sales and marketing.

I agree. Understanding sales and marketing can help you succeed in many areas, not just business

I think you're right. We often sell ourselves in job interviews, social situations, and even in our personal lives

Yes, I totally agree with this because, consider how a nonprofit organization uses marketing to raise awareness and funds for a cause, or how personal branding helps professionals advance their careers.