Can you recommend me books in English, for non-native speakers?

It can be romance, thrillers, self-help books, or just a good and straightforward reading with not-so-difficult English.

I have an intermediate English level and have already read some books in English without any problems, but some books can be still very difficult for me.

Can you recommend me books with an straightforward English, for non-native speakers?

by neilrevinhunter