Purpose: Public health nurses (PHNs) are required to assess the readiness of the clients and provide lifestyle counseling accordingly. The purpose of this study was to compare the lifestyle counseling provided for clients with different levels of readiness based on self-evaluations and independent assessment. Methods: Participants were PHNs with 10 years’ experience or less. Lifestyle counseling skills were measured through a simulated counseling session in a primary setting lasting up to 30 minutes, followed by a review session, where the participant provided self-evaluations, and the simulated client provided others-evaluations, of the session. The simulated clients played the role of clients at either the pre-contemplation or contemplation stage of preparedness as per the stages of behavior change theory. Results: The self-evaluation results showed that the mean scores for five of the six skill categories, are lower in the precontemplation-stage client cases than in the contemplation-stage client cases, and significantly so for two skill categories. The others-evaluations showed significantly lower mean scores for all skill categories in the precontemplation cases than in the contemplation cases. Conclusion: The PHNs and simulated clients agreed that lifestyle counseling skills were inadequate for the precontemplation cases, as compared with the contemplation cases. The lifestyle counseling skills of PHNs with less experience may not be well-adjusted to the readiness of the client, indicating difficulties in supporting less prepared clients.