hard truths

Hard truths are facts or realities that are difficult to accept because they challenge our beliefs, expose our shortcomings, or force us to confront uncomfortable situations.

The phrase implies that some truths require courage both to speak and to hear.

She finally told him some hard truths about his drinking.

Hard truths are often contrasted with comfortable lies or easy platitudes—the implication being that facing them, however painful, is necessary for growth or progress.