Genes play an important role in determining the individual's behaviour. However, you can not say that Genes are the sole determining factor that decides anxiety and depression. Anxiety is not a sudden process. The environment in which you have been born and brought up plays an important role in determining the level of anxiety. Anxiety tends to flow from one generation to the other. If someone in the family has depression or anxiety, we can assume that it will get past or maybe it will not. Buy Diazepam UK