Well if it works for you, Great !!!
The basic way to define an existentialist is:
A central proposition of existentialism is that existence precedes essence, which means that the actual life of the individual is what constitutes what could be called his or her "essence" instead of there being a predetermined essence that defines what it is to be a human. Thus, human beings – through their own consciousness – create their own values and determine a meaning to their life.-http://en.wikipedia.org/wiki/Existentialism
Ok, obviously you missed what I said. Predetermined essence is like a God who creates us for a specific purpose. The subconscious, our genes, the reactions in our head, these are still
us. We can choose not to act in accordance with that nature. I have depression, I have not killed myself, therefore I am free. I have addiction, I am sober, therefore I am free. An abused child from a horrible family and violent genes
chooses to become a serial killer. There is a difference between heavy influence and predetermination.
How can you create your own values and determine your meaning in life if you don't have free will ?
There is not a complete lack of free will. We have a "handful" of choices based on previous events, our genes, how we were raised, etc. I cannot fly because humans did not evolve with wings. I cannot be of darker skin color because I descend from Caucasians. I cannot not have depression because it is inherited. What I choose to do as a flightless, white, depressed male is up to me. It is
comfortable to believe that we can do whatever we want and not be held responsible. I choose to take responsibility no matter how much influence. Even if a man is sticking a gun in your mouth telling you to rob a bank, you can still say no.