When all is summed up, a man never speaks of himself without loss; his accusations of himself are always believed, his praises never.

Talking about yourself is a losing trade in both directions. Criticism of yourself is taken at face value and filed away permanently; praise of yourself is discounted and sometimes held against you. The safest thing you can do for your own reputation is let other people do the reporting.

Cut the self-deprecating remarks this week, since they are being believed even where you meant them as a joke. Cut the advertising as well. Say plainly what you did, without the verdict attached, and let the listener supply the rest.