Explanation:

- The idiom "Blow one's own trumpet" means to praise oneself. It involves boasting or talking about one's own achievements, skills, or abilities.

- Option 2: Praise oneself is the correct meaning.

- Option 1: Follow others

- This option suggests going along with what others do, rather than taking initiative or spotlight for oneself. It doesn't align with the idiom.

- Option 3: Condemn others

- This option means to criticize or express strong disapproval of others. It’s unrelated to the idea of self-praise.

- Option 4: Be self-reliant

- Being self-reliant means depending on oneself rather than others. This doesn't capture the same sense of boasting as the idiom.