The Career Before The Campaign
Most artists plan the release. Few plan the career the release is meant to serve. The order matters more than either.

Ask an artist about their plan and you will usually hear about a campaign — the single, the video, the rollout, the date. Ask about the career that campaign is meant to advance, and the room often goes quiet.
Campaigns are chapters, not the book
A campaign is a chapter. Without a sense of the whole book, every chapter reads the same — a burst of effort, a spike of attention, then silence until the next one. The audience never learns where the story is going, because there is no story, only episodes.
You cannot sequence chapters well if you have never decided what the book is about.
The career comes first. It defines what each release is for, who it is meant to reach, and how it moves the artist closer to something larger than a week of streams.
The discipline of the long view
When the career is clear, campaigns get easier — not harder. Decisions that once felt agonising resolve themselves against a simple test: does this move the larger story forward? If it doesn't, it doesn't matter how well it would perform.
Plan the career. The campaigns will follow, and they will finally add up to something.