Character Lab is co-lead by Angela Duckworth, author of Grit (a highly recommended book).
This articles talks about the being “all in” on a decision, even though there will (will!) setbacks on any major decisions. That doesn’t mean it is the wrong decision.
Here is a quote from the article that explains the “crossing the Rubicon” metaphor that is helpful.
This is the metaphor that psychologist Peter Gollwitzer uses to explain the difference between deliberating about what to do and resolving that yes, this is exactly what you want to do. On one side of the river, you’ve got options. On the other, you’re committed.