I've discoveried I posess a large number of talents and skil

I've discoveried （that）省去that
-I posess a large number of talents and skills这里I是主语,have discovered 是谓语,后面的是宾语从句做宾语第二个that I never would have thought were within me-是个定语从句,修饰talents and skills} 这里也省去了that,也是一个定语从句,与前面的定语从句并列had it not been for my being open to trying new opportunities。it指的是前面的talents and skills