You have such an admirable child.
You earned my admiration by cleaning your room every single day.
Katie earned the admiration of her co-workers with her hard work and attention to detail.
Your feelings are in your heart. When your feelings are in your heart they are pure feelings. You can be happy for people and feel admiration for their successes. This is a great feeling to have in your heart.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.