I'm pushing my boundaries.

Meaning

I'm challenging myself to do things outside my comfort zone.

Examples

• John: 'That's a courageous decision.'
• Alice: 'Thanks, <b>I'm pushing my boundaries</b> and trying something new.'
• John: 'I appreciate that. <b>I'm pushing my boundaries</b> to become a better person.'
• Alice: 'I admire your bravery, John.'