As a lifelong martial artist, and current BJJ (Brazilian Jiu Jitsu) roller, I can relate to this meme.  Many people will agree that martial arts training, regardless of the art, will increase one’s confidence.  Having said that – please be aware that it is very possible to be fed incorrect information and be trained in fighting theory and technique that actually does not work, which is very bad if something serious should ever happen.  However the individual still gains confidence from the training.  It is confidence built with a house of cards, but to the individual, from their perspective (before the illusion is shattered) they feel secure and confident.  My quick advice is if you are interested in training in a martial art, or enrolling a child in some classes, do plenty of research on the art, the school, the teacher, etc. to make sure your personal goals are aligned.  Now go train!  🙂