I felt a sense of jealousy toward his success.
Jealousy is one of the natural human emotions.
Refers to admiration or envy without the negative, resentful nuance often present in 嫉妬心.
Compound of 嫉妬 (しっと, 'jealousy') and 心 (しん, 'heart/mind'). The exact historical derivation is uncertain, but the combination straightforwardly means 'jealous heart' or 'feeling of jealousy'.