Understand when you’re supposed to be the guide/advisor and when you’re supposed to be someone going along for the ride.
If it’s the former, you need to take charge. Provide more input and make suggestions as the guide. You still don’t want to do everything for the other person (they want to be the hero of their own story), but with your help, they can get where they want to go.
If you’re just tagging along, read the situation and minimize your input. Here, the other person wants to be the primary decision-maker. Be there to support them and to listen to them, but don’t try to be the white knight and solve all of their problems. They want to feel listened to.