With opportunity in front of you, hesitating only means losing your chance.
Tips
history
From Li Si's (李斯) 《谏逐客书》 of the Qin dynasty: '使天下之士,退而不敢西向,裹足不入秦' — 'scholars of the realm will turn back, refusing to head west, binding up their feet and not entering Qin.' Originally about literal refusal to travel; now figurative.
memory
Literal: 'to wrap up one's feet and not advance.' Picture binding your own feet with cloth so you physically can't walk forward — a vivid image of self-imposed paralysis.