text: Hello there,\n\nI think it would have been better if you would have provided the context of your letter. Now, I don't know whether it is a letter from a boss to his/her employees or from a father/mother to his/her son/daughter or any other.\n\nNevertheless, I will try and answer your question with some of my ideas-\n1- Put a suiable heading. It would be better if it is a famous quote or something. You can search for a good quote here-\nhttp://www.knowledgefound.com/context/index.cfm\n\n2- Don't sound like a preacher. Try to be friendly and warm.\n\n3- Use simple & understandable language. The reader should not need a dictionary to read your letter.\n\n4- There are some great father-to-son letters written by some great authors and philosophers. You can search for such literature in a public library. You can also search for them on the internet. \n\n5- Use some real life examples to substantiate your point.\n\n6- Don't wander away from the topic. Your every new sentence should be in continuation to the last one.\n\nI hope I helped you.\nGood Luck. :)