Different personality in another language?

I don't think that I have a different personality when I speak English, but because I've read so many books in English that talk about how to become a better person, most of the valuable lessons that I've learned I found in english resources.

So I have some trouble when I try to convey this lessons in my native language, trying to find terms and and expressions that match the original meaning.

Is there something that sounded unnatural in my text? If so, how would you put it better?