When you look at the history of the Holocaust, and that of survivors, it is interesting to observe that the people who actually saved lives did not talk about it –at all. If anything, they felt guilty for not doing enough. Think of Oskar Schindler.
There seems to be an inverse relationship between the amount of doing good and self-promotion. The more you monitor and reflect on yourself, the more likely you are to do good, the more you feel the responsibility to do more. Conversely, people who constantly signal their virtuosity… are the least introspective people, and are therefore precisely the people you need to watch out for.