It is crucial to be completely honest and transparent with your attorney. Withholding information, even if you believe it may be unfavorable, can significantly undermine your lawyer's ability to effectively represent you. Your attorney needs to have a comprehensive understanding of the facts and circumstances surrounding your case in order to develop the best possible defense strategy.
Even if you have committed a crime or believe you are guilty, it is still essential to share all the details with your lawyer. There may be mitigating factors or nuances that could impact the outcome of your case that your attorney may be able to leverage. Additionally, the attorney-client privilege ensures that anything you disclose to your lawyer will remain confidential and cannot be shared with the prosecution. Your lawyer is there to advocate for you to the best of their ability, but they can only do so if they have access to the complete picture. Being forthright from the outset will allow your attorney to build the strongest case on your behalf.