When someone congratulates oneself, it means that they are praising or applauding their own successes or accomplishments. However, there are several antonyms for the term that imply a lack of self-praise or appreciation. Some of these antonyms include self-deprecation, self-criticism, self-reproach, self-blame, and self-doubt. In reality, constantly congratulating oneself can sometimes lead to egotism and vanity, which is why it's important to balance self-praise with self-reflection and improvement. While it's okay to celebrate one's achievements, it's important not to let it get to one's head and to always strive to improve and learn more. Ultimately, humility and modesty can be attractive traits, both in personal and professional settings.