I had a sweet client recently tell me that, although she will feel uncomfortable showcasing her accomplishments throughout her upcoming application process, she thinks her mom might be able to help her learn to speak about them fluidly.
If you have a supportive mother (father, grandparent), and you are having trouble highlighting your achievements in your personal statement, application, interview, even letter of intent, consider channeling your inner mother.
Remember: You must distinguish yourself from the other competitive candidates, and the best way to do that is with explicit examples of your accomplishments.