You cant steal Second with your foot on First! - Somebody
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Or “You can’t swim in the deep end of the pool while you’re holding onto the wall in the shallow end.” - Same somebody
or You cant swim in the deep end of the pool while youre holding onto the wall in the shallow end. - Same somebody
You can't run a sub-4 marathon unless you do 10K a day.
If you're going to toss around analogies from a Thesaurus, make it about something that you are capable of yourself. Envy is a socialist character trait.