How do you say your achievement?Know the difference between a duty and an achievement.Identify your achievements by asking yourself questions.Quantify your achievements.Identify non-quantifiable accomplishments.Map your achievements to the job description.
How do I talk about my accomplishments at work?Keep it Simple.Whenever Possible, Use the Magic Word “Because”Talk About How You Intend to Keep Working Harder (Not Rest on Your Laurels)Make it a Conversation, Not a Monologue.Be Generous—and Be a Cheerleader.
How do you appreciate someone's achievement?“Congratulations on your well-deserved success.”“Heartfelt congratulations to you.”“Warmest congratulations on your achievement.”“Congratulations and best wishes for your next adventure!”“So pleased to see you accomplishing great things.”
Related Question How do I tell someone about my achievements?
Is it OK to tell people your plans?
Why publicly announcing your goals is a bad idea
The researchers concluded that telling people what you want to achieve creates a premature sense of completeness. While you feel a sense of pride in letting people know what you intend to do, that pride doesn't motivate you and can in fact hurt you later on.