I'm bolstering my confidence.

Meaning

I'm increasing my self-assurance.

Examples

• John: I have a big presentation tomorrow.
• Alice: Don't worry, you'll do great! <b>I'm bolstering my confidence</b> by practicing my speech.
• John: That's a good idea! How do you do it?
• Alice: Visualization and positive self-talk. It helps <b>I'm bolstering my confidence</b> every day.