Brevity and self-discipline are good. Editing and honing are good. The best is when it comes in at 153 and you have to precisely pinpoint those 3 words you could happily do without.
'Precisely pinpoint': what's that 'precisely' bringing to the party? Does anyone ever vaguely or haphazardly pinpoint anything? No! So out with another sandbag, and upward we soar.