I, personally, do not practice any forms of divination. I do not believe that there is any way to tell the future so I do not try to do anything that will allow me to do so. If you yourself practice divination, you may be able to determine which type of divination you practice with the help of this answer.
One type of divination is fortuitous divination. This is a sort of divination that occurs without any conscious effort on your part. For example, you might believe in the superstition that you will have bad luck if a black cat crosses your path. If you believe this, you will engage in fortuitous divination whenever you meet a black cat. You will predict (without having to engage in any effort) that you are going to have bad luck.
A second type of divination is inspirational. This is actually not in contrast to fortuitous divination. Divination can be both inspirational and fortuitous. Inspirational divination is divination in which the person comes into (or believes they come into) direct contact with a supernatural being. For example, you might believe that God talks to you in your dreams. When you believe that you can predict a future event because you had dream that you believe was inspired by God, you are engaging in inspirational divination.
Finally, you ask about deliberate divination. This is the opposite of fortuitous because it occurs when you consciously set out to learn what will happen in the future. For example, if you go to someone who reads Tarot cards, you are deliberately trying to find out about the future. This is different from fortuitous divination in which you do not actively seek ways of predicting the future.
Using these definitions, you may be able to determine whether any divination practices that you engage in fit any of these categories.