One common mistake is waiting for a perfect number before starting the conversation. Clarity usually comes from the conversation, not before it.

Another is treating last year’s market return as a plan. Returns vary. A plan that only works in a strong market is a hope, not a plan.

People also underestimate taxes, healthcare, and how long retirement can last. They overestimate how precisely anyone can predict those things. The goal is a range and a review rhythm, not a single magic figure.

A quieter mistake is buying a product you cannot explain. If you cannot tell a trusted person what it costs, what happens if you stop funding it, and what it does not do, pause.

Finally, many people plan as if they will never need to change course. Life changes. A good process includes check-ins.