The correct answer to this open question is the following.
Letting others know about one's accomplishments is important. Agree up to one point. Let them know honestly what you have done and what you are capable of doing, but not to show off, not to make others feel less than us. We have to share only what is important for the occasion. For instance, if are applying for a job or to get the account of a new client, of course, that we need to mention our accomplishments professionally.