If the quality of your posts is good then you will get positive karma. And if the quality of the post is bad then you will get negative karma. However, even after getting negative karma, if you break down, it is a failure for you. You will always think that now you have got negative karma, then you will definitely get positive karma. You will always think about why you have been given negative karma and why you have been given negative karma. If you start re-posting by discarding those issues then you will have both your success and your future bright.