The only author who ever got me to roll on the floor laughing – literally – was Douglas Adams. 
More recently, Bernadine Evaristo made me cry. Sometimes I read a sentence so astoundingly beautiful that I had to pause and recover.
Think about the books that moved you, that made you see the world with different eyes. To improve your writing, they say, you should re-read the books that inspire you. And pay close attention to how the author evokes that effect.