self-defeating

his constant complaining about his job proved self-defeating.

the self-defeating nature of their argument was obvious to everyone.

trying to control everything can be a self-defeating strategy.

their self-defeating behavior ultimately led to their failure.

it was a self-defeating cycle of negativity and despair.

the self-defeating prophecy seemed to be coming true.

his self-defeating actions undermined his own goals.

the self-defeating policy backfired spectacularly.

it's a self-defeating habit to procrastinate on important tasks.

their self-defeating approach to problem-solving was ineffective.

the self-defeating logic of the situation was frustrating.