anxiety and depression help

What kind of people are susceptible to anxiety and depression?
Just wondering what makes a person gets depression and anxiety disorders? Some people are more likely? What are the factors involved?
lack of adequate support during their growth .. what you can really mess up. On the other hand a person can go through hell and back and still maintain sanity if they have family and friends to guide them to the end. I say "grow", because things like anxiety and depression are usually made in childhood. Besides, I think part of it is genetic. As if his mother's depression is more likely that you too, even if everything else is fine. that could mimic the behavior and on the other hand. question interesting anyway:)
Anxiety Depression Help