Thank you all for the answers.
But still im a bit confused if there is a consensus into what is right effort.
Lets say i break my leg, a painful feeling arises and then it comes the craving in the form of a "desire" to change that situation, and also it comes the clinging and so on.
To put an end to that craving should i:
-reflect on the pain
-follow the noble 8 fold path
-pay right attention and choose between "seeing, restraining, using, tolerating, avoiding, developing" according to that particular hindrance.