Thank you, Gokuyum, for your explanation and example. However, I have still some doubts about this sentence:

Bana birçok kez hakkettiğim kadar mutlu olmamı söyledin.

I think it means "you told me many times that I´m as happy as I deserve it" - so there are two things missing:

1. "Many times you told me you want me to be happy...". So it looks like if "istediğini" was missing here: Yes

Bana birçok kez hakkettiğim kadar multu olmamı istediğini söyledin. correct

2. But still, this would mean that "you want me to be happy as much as I deserve it" - however, I think that the meaning of original sentence is "you want me to be happy because, as you said, I deserve it". In this case, could it be translated this way?

Bana birçok kez bunu hakkettiğim için mutlu olmamı istediğini söyledin. correct

Sorry, Gokuyum - I haven´t seen your replies while I was writing mine. I´m also not sure about exact meaning of original text... so probably we will have to wait for someone to help clear our doubts

Many times you told me you want me to be happy as I deserve it

İn my opinion, "as" in that sentence works as "since", so i would say ;

Bana, birçok kez, mutlu olmamı istediğini, çünkü mutluluğu hakettiğimi söyledin.