If your self-perception is that you can't accomplish something because you never finish anything you start, then go finish something and change your self-perception.
If your self-perception is that you can't accomplish something because you never finish anything you start, then go finish something and change your self-perception.
如果你的自我认知是你是因做事常半途而废而不能完成某件事情，那么就去做完它，改变这种自我认知。