Explanation:

- Option 1: Follow others

This means to do what everyone else is doing, not related to "blowing one's own trumpet."

- Option 2: Praise oneself

This means to brag or boast about one's own achievements or abilities. This is the correct meaning of the idiom "blow one's own trumpet."

- Option 3: Condemn others

This refers to expressing strong disapproval of others, which is not the meaning of the idiom.

- Option 4: Be self-reliant

This means to depend on oneself, being independent, which isn't related to "blowing one's own trumpet."