I recently found this post on the American Society of Plastic Surgeon’s website.
There are few ways of effectively hiding it. This can lead to embarrassment, anxiety, depression, and social isolation.

Men fail to reach many of their life goals as a result of been held back because of this condition. As opposed to the female realm of breasts conditions, where it is more accepted to be open and discussed about, gynaecomastia is a condition that most men feel uncomfortable talking about and therefore most fail to seek help for it. Surgical treatment is effective and can dramatically restore confidence and self-esteem.

Read the full article here:

(Any surgical or invasive procedure carries risks. Before proceeding, you should seek a second opinion from an appropriately qualified health practitioner.)