Lock-in

The hook makes a promise. The next 1 to 3 sentences decide whether the viewer believes it. If they get a detour, a backstory or a slow setup, the curiosity turns into "this was bait" and they leave.

Step 1: Find the gap

Write what the hook promised, then what actually comes next in the video, with the time. Flag any stretch that doesn't serve the promise: an intro, a story about the creator, "before we start", a long setup. Say exactly what to cut or move.

Step 2: Pick one lock-in move

Move	When	Example shape
Proof right away	The hook made a claim	Show the result, the number (theirs), the screen
Picture the result	The viewer wants a change	"By the end you'll [see / have] [result]" said over the result
Stack a second contrast	The hook landed and needs more pull	"And it's not your shoes either."
Name the method	The fix has steps	"It's one change: [named thing]."
Answer the objection	The viewer is already doubting	"No, you don't need [the thing they think they need]."
Say it concretely	The hook was a bold or abstract claim	Restate it with the real number or the real example