No, you are not allowed to say that you don't have a style!
Everybody has a personal style but they might not know how to verbalize it.
Finding your personal style is about tapping into your feelings. What emotions does a particular color, fabric, lamp, chair or whole room evoke in you? Have you ever walked into a house and known, instantly, that your family would be happy there?
Start thinking of the story you want your home to tell. What do you want your surroundings to say about you, your family, it's past, it's present and it's future? How do you want your house to FEEL?
This way of thinking, of feeling, about your home is paramount. The only way your house will ever be truly yours is if you put some of yourself into it. I cannot tell you how many times that I have walked into a home and known who the designer was. A home should look like the person who lives there and should not reflect a designer's personal style. I have also seen many homes that looked exactly like a retail furniture showroom. Everything was perfectly "done" but the result was soulless.
So, dig deep into yourself. Take the time it takes. Slow down. Notice things. Think. This may seem odd---it is not second nature to many---but questioning why you like a room in a magazine photo or why you feel good in a certain place will help you get going. It is a process. You are more creative than you think!
When I am working with a client, I endeavor to get to know them and their family. I have to be able to help them understand how they want to live so that I can help them connect it to the reality of how they are actually living and who they are. (No, you can probably never have white carpeting if you have children even though it looks so pretty in the pictures!)
Start now. Carve out some quiet time to reflect on how you can bring more of your heart and personalty into your home. Without meaning in home decorating...the expression of our beliefs, values, loves and dreams---we have only a pointless display of material goods.