The simple tree words "brag about it" have an undertone whereby the person is being encouraged to flaunt their achievements in times of stiff competition. But such an act works the other way, and it might inspire or arouse envy and ill will.
Bragging fits that rare category of being materially and spiritually beneficial. Someone saying, "I just completed a major project," or "I published my first book," affirming their self-worth by acknowledging the achievement of their goals. Therefore, bragging is a means of acknowledging one's own accomplishments; therein lies the recognition of self-worth and the potential to inspire others.
However, there is art and morality in bragging. Not everyone can talk about their achievement without sounding arrogant. The size of the success is of little interest; what matters is the communication of it in sincere and educating terms, rather than putting others down. Healthy bragging constitutes a kind of story, not self-sponsorship.
This is the point where they are going to have a very special culture known as "brag about it." The news feed is filled with contents that have pictures and posts and videos of people who have really done very well in life. This could matter in motivational terms, but possible make the social mind in a lesser sense of otherwise. The ability to tell the difference between bragging that uplift is from that which goes a long way to destroy is crucial to mental well-being.
It is at length an invitation to brag to strike the balance celebrating oneself without losing empathy, sharing one's achievements, but letting them inspire rather than compete. True success isn't just what you achieve, rather, it is how you use it to add value to yourself and others.