The Infernal Decices- Series by Cassandra Clare is absolutely gorgeous. That book caused so many emotions in me. Even more than I have anyway. I cried, I laughed, I totally fell in love with the characters, I hated the bad guys and felt pretty smartass as the main character sometimes. Love the love-triangle even though it caused me so much heartache.
The mortal Instruments series by her is totally worth reading too.
I think, the best book I've ever read, is "Poradnik pozytywnego myślenia", I don't know if it have an english version, but if, then it's gonna be called something like "Tutorial for a good thinking"
series by Steven Erikson named Malazan Book of the Fallen, it's like 10 books and I'm currently finishing the 4th one. it's incredibly deep, and I simply can't say that it's just fantasy. there's everything in there, but it's very complex and hard to get into (especially for me, not speaking English natively), I got totally hooked in the middle of the first one though 😃 Gardens of the Moon it's called, if anyone cares to try it. you won't regret it.