一直是我不好
[yī zhí shì wŏ bù hăo]
In Chinese, '一直是我不好' conveys 'It's always my fault'. People tend to choose such a username when they consider mistakes on their part being major contributor leading up to negative outcome. They could also take this phrase in an opposite manner indicating others keep blaming them. No matter what interpretation you use it reflects an inner struggle within the holder.