设置好高骛远（或过低）。

Set your sights too high (or too low).

youdao

其必然结果是当股价或利润过高或过低时，其终将回归均值。

The corollary is that when share price or profits are too high or too low, they will eventually revert to the mean.

youdao

某些情况下，我们可能发现报告者给了一个问题过高或过低的评级。

In some cases, we may find that the reporter has given the issue too high or too low a rating.

youdao