Say the things you feel and think.
Do not hold back. Share your opinions, thoughts and feelings with those around you; family, friends, and acquaintances. Be thoughtful of how you say it and the circumstances in which you are saying them. Just make sure that you say them. Assuming others know how you feel or what you are thinking is foolish. For as much as we want others to understand us, even the ones that are closest to us have a hard time seeing things from your point of view.
Some times it is not about your point of view. It is about letting people know what is important to you. I always tell you that I love you. You some times reply with that sassiness that you are known for that "I already know that!". Maybe you do. Maybe you do not. The extent of my love for you is something that you will not understand until you have children of your own in a very distant future. There are things about the way a father loves his daughter that you might never come to understand.
When I tell you something, even if you think you already know it... listen. You might learn something new or learn to see things differently. One of the wisest men to ever walk this earth was wise because he accepted that his knowledge was limited. Socrates was wise because he was aware that he was not all-knowing. In many ways you are like me and think that you know everything. I learned a long time ago that I don't know everything. So I listen. I read. I learn.
You can teach the teacher. So although you might not know everything you can still have some insight or nugget of information that I do not. Speak up and teach me. There is nothing more satisfying for me than to learn something new from someone I have taught so much to. It is one of the greatest pleasures in life; to receive something from someone who once depended on you for everything.
Never assume people know where you stand. Speak your mind. Enjoy life.