I have seen two ways of saying "i find it difficult"
BEN ICIN ZOR

BENIM ICIN ZORDUR

Which is correct or are they both right?

"BEN İÇİN ZOR" is incorrect.
"BENİM İÇİN ZOR" and "BENİM İÇİN ZORDUR" are both correct, but neither is what a Turk would say to mean "I find it difficult (or hard)".

Though not a literal translatıon, a Turk would say "BU BANA ZOR GELİYOR".

Yes I agree that "benim için çok zor" (it is very difficult for me) is not the best phrase in the sense that you want it to be. But, I have to admit that sentences including 'için' usually are much easier constructed by foreigners since there are less suffixes. While it is not the best choice, I think it is still acceptable to use that phrase in your example.

Of course "Bana zor geliyor" is a better phrase for "I find it difficult" as in the following context:

"I find it difficult to wake up early in the morning."
"Sabah erken uyanmak bana zor geliyor."

On the other hand, if somebody has asked your opinion or if you want to tell your opinion using "bence" could fit better.

I think French is a difficult language.
Bence Fransızca zor bir dil.

- Do you think Bush will be reelected?
- Sence Bush yeniden seçilir mi?

- I don't think so.
- Bence çok zor.

The most suitable usage of "Benim için çok zor" would be in such an example:

Bunu söylemek benim için çok zor ama, ilişkimiz bitti.
It is very difficult for me to say this but our relationship is over.

thankyou all for your responses.

i found ben icin zor in a famous turkish language study programme!! cant remember which one.so they are wrong!!

i was told by a local to say benim icin zordur but i will also add to my vocabulary additional phrases you have all supplied for me.

i use the phrase to say to people that i am learnig turkish - but i find it difficult