[erikerikson]

A different interpretation of "you tried your best" is valid. It's not a remark that one has reached their capacity but that one made their honest best effort for the moment they made it (even if it often doesn't feel that way). In fact, because of that effort they'll have learned things that will make their next best efforts even more effective and less prone to the risks that reduced the desired outcome of the prior effort. Bests are a constantly evolving target.