Zhè chǎng huòshì shì jiùyóuzìqǔ, guài bu liǎo biérén.
This disaster is self-inflicted; there is no one else to blame.
Tips
memory
咎 = blame / fault; 由 = caused by; 自 = oneself; 取 = taken. 'The blame is caused by and taken by oneself.' A neat four-character summary of self-inflicted trouble.