my friend spend too much money, how I advise him

First of all, it's understandable that you're concerned about your friend's spending habits. It can be tough to watch someone close to you engage in behavior that could ultimately harm them financially or otherwise. From a Buddhist perspective, it's important to remember the concept of non-attachment. Ultimately, we cannot control the actions or decisions of others, but we can control our own reactions and responses. It's important to approach the situation with compassion, rather than judgement or frustration. From a psychological perspective, it might be helpful to have an open and honest conversation with your friend about your concerns. Try to approach the conversation from a place of empathy and understanding, rather than criticism. Ask questions and try to understand their perspective on their spending habits. It might be that there are underlying emotional or psychological issues that are driving their behavior. In this case, it might be helpful to suggest seeking professional support, such as therapy or counseling. In terms of coaching advice, it might be helpful to suggest setting clear financial goals with your friend. Encourage them to track their spending and create a budget that aligns with their goals. It might also be helpful to suggest finding alternative activities or hobbies that don't involve spending money, such as exercising or volunteering. Ultimately, the most important thing is to approach the situation with kindness and compassion, rather than judgement or frustration.