"Going back to the drawing board" is a common expression used to imply the need to start over. This phrase can be used in various situations where a plan or idea did not work out as intended. Here are some synonyms for this phrase:
1. Starting from scratch
2. Pressing the reset button
3. Revising the game plan
4. Taking a step back
5. Reworking the strategy
6. Reconsidering the approach
7. Going back to square one
8. Re-evaluating the plan
9. Returning to the drawing table
10. Renovating the plan
In essence, these synonyms all mean you need to re-examine a situation and come up with a new solution. Each phrase emphasizes a different aspect of what it means to start fresh and try again.