That's impressive.

I admire your dedication.

impressive　adj)見事な･印象的な

admire　v)～を立派だと思う･感心する

dedication   /,dedɪ'keɪʃn/　n)専念･献身

★ the hard work and effort that somebody puts into an activity or a purpose because they think it is important

・dedication to somebody/something   I really admire Gina for her dedication to her family.