Select the most appropriate meaning of the given idiom.

To blow one's own trumpet

To speak proudly of oneself

The most appropriate meaning of the idiom "to blow one's own trumpet" is to speak proudly of oneself. This idiom comes from the image of a trumpeter who is blowing their own horn to make themselves heard. The idiom is used to describe someone who is boastful or self-aggrandizing.

The other options for the meaning of the idiom are not accurate. To see things not as they are means to have a distorted view of reality. To quarrel constantly means to argue or fight with someone on a regular basis. To suffer defeat means to lose a battle or contest.