我心尖刻薄我无理取闹
[wŏ xīn jiān kè bó wŏ wú lĭ qŭ nào]
This expresses a rather harsh self-description, admitting, 'my heart is bitter; I am unreasonably difficult.' It might reveal the user acknowledges their tendency to be moody or overly critical sometimes and is seeking a way to be understood despite these character flaws.