habit是习惯,包括日常生活中和工作中的习惯;
hobby是业余爱好,主要指工作之余的爱好。
例:
Im trying to break the habit of staying up too late.
我正试图改掉熬夜的习惯。
She had the disconcerting habit of saying exactly what she thought.
她怎么想的就怎么说,这种习惯令人非常难堪。
Find a hobby or interest which enthuses you.
培养一个自己喜欢的爱好或兴趣。
His secret hobby: performing magic tricks.
他私底下有变戏法的嗜好。