Most marketing frameworks suck but there is one that doesn't. 

It's Mark Ritson's 'DST' framework and it can take you from confusion to momentum in a week or two.

It's super simple:
1. Diagnosis - where are we now, what's the opportunity
2. Strategy - where do we want to be, via what path
3. Tactics - what actions will we take to get there

Was designed for doing top level brand and marketing plans but is easy to adapt for GTM, TGE, campaign, channel plans etc.

Also dovetails well with modern growth frameworks and is sector agnostic.

Put "Planning for marketing planning: 14 steps to an effective presentation" into your favourite search engine for Ritson's detailed guide.