The quote conveys assertiveness in response to causing hurt. The first part acknowledges causing hurt, signifying self-awareness and accountability.
The second part implies that those hurt may have contributed to the situation. It suggests that the speaker won't tolerate mistreatment.
In essence, the quote sets boundaries. It communicates the speaker's refusal to tolerate mistreatment while acknowledging their own actions. It's a message of self-respect and demands mutual respect in return.