The 80-20 rule you mentioned, as described by Steve Harvey, emphasizes the idea that sometimes people may be tempted by the 20% of something they lack in their current relationship, not realizing they might be giving up the 80% that they already have. It's a reminder to appreciate and work on what you have rather than constantly seeking something better.
Your perspective on wanting 100% of everything you desire is valid, and it underscores the importance of being true to oneself and expressing one's needs in a relationship. It's also noteworthy that having these conversations and avoiding judgment can lead to a deeper understanding between partners.