The quote underscores self-assuredness and value. "I am something you'll regret losing" conveys the speaker's confidence in their significance.
"I can promise you that much" suggests the certainty of their worth and the inevitable regret that may arise from losing them.
In essence, the quote celebrates self-worth and self-respect. It conveys the idea that recognizing one's value can lead to healthy boundaries and self-confidence. It's a reminder that understanding one's worth can deter mistreatment and foster relationships based on mutual respect and appreciation.