翻译：他是很敏感，自尊心非常强的人。所以批评他的时候我总是小心翼翼。

He is a very sensitive and high selfesteem person. So, when I criticized him I always be careful.

他是很敏感，自尊心非常强的人。所以批评他的时候我总是小心翼翼。

He is extremely sensitive and prideful. Whenever I criticize him I have to be careful.
He is a very sensitive person with high self-esteem. I always have to be cautious when critiquing him.

很敏感：very/extremely sensitive
自尊心：self-esteem; pride
批评：criticize; critique
小心翼翼：careful; cautious

用了不同的词把句子翻译了两次。希望对你有帮助。我比较喜欢第一句～

He is a very sensitive person with high self-esteem, so when I criticize him I am always very careful.