One may miss the mark by aiming too high as too low.

I've always believed the greater danger is not aiming too high, but too low, settling for a bogey rather than shooting for an eagle.

I've always believed the greater danger is not aiming too high, but too low, settling for a bogey rather than shooting for an eagle

This only grant me, that my means may lie too low for envy, for contempt too high.

You can't let the highs get too high and you can't let the lows get too low.

All of life is peaks and valleys. Don't let the peaks get too high and the valleys too low.