A growth plan tells you where you want to go. A capital allocation plan tells you what you are willing to spend to get there, and what you are choosing not to fund instead. Most plans have the first and not the second. That is why they stall.
Growth consumes cash before it returns any. New inventory, new channels, new people, longer receivables, deeper terms for a bigger customer. All of it is paid up front, out of the same account that keeps the current business running. A plan that does not say where that cash comes from, and in what order, is not a plan. It is a wish with a revenue target on it.
The discipline is simple to state and hard to hold. Decide which opportunities get funded. Decide what each one needs, in cash and in capacity, before it earns anything back. Decide what you will not do this year so the things you chose actually get what they need. Then hold that line when the quarter gets loud.
Capital allocation is where strategy becomes real, because it is where the trade-offs stop being theoretical. A business that allocates on purpose grows on purpose. A business that does not ends up funding whatever shouted loudest in the last meeting.