1. reach your full potential
try to be all you can be
If you tell someone to 'be all you can be' you are encouraging them to reach the height of their potential and experience the limits of their capability. This phrase was a slogan for the US army, encouraging recruits to pursue their dreams without fear. This sentiment is best known in the similar meaning phrase 'be the best you can be' or 'do the best you can.' This phrase is a bit sentimental and might be used in advertising or in personal exchanges.