Well, this is normal for adolescents and young adults. In this stage of development, people are beginning their quest for their identity -- who they want to be in the future. During childhood, they were told by their parents and teachers what to do and what not to do. What to wear, what to eat, when to sleep and many others. As they grow older, they join groups that they think has the same interests as theirs. They begin to feel that these people understand them more than their parents do. The thought of them obeying the rules of their parents kind of annoys them because of the freedom and independence they want to achieve. Growing up, we usually make a mental image of who we want to be and there comes a time when we meet someone who seems to be everything that we want to be as projected by the mental image that I am talking about. And that someone becomes our model. We tend to modify what we were told to do by mimicking the behaviors, attitudes, personalities and words of our models.

It's part of the human development and admit it or not, we've been through this. Some are in the process, some are just starting the process. However, it is not good to mimic others and continuously look for someone to be your pattern in your search for identity. In the end, you have to learn to do things your way. Remember to “be the first rate version of yourself, not the second rate version of someone else.”

Hope this helps