In order to answer your question, it is important to first of all define the three approaches you mention in your question. Occasionalism, for example, argues that any interaction between the mind and the body is a result of God's interference. Interactionism assumes that the mind and the body are two separate entities but that they influence and impact on each other. Parallelism, on the other hand, takes the opposite view to interactionism: parallelism argues that the mind and the body are two completely separate entities, which do not interact with each other, but instead run parallel.
In response to your question, my personal view is probably most in line with interactionism. Whilst I am convinced that the mind and the body are two separate entities, I also believe that they do at times interact with each other and influence each other. You could mention stress related illnesses as an example for this interaction between the mind and the body: when a person is under severe stress, the mind is suffering as a result. However, this does not only affect the mind, but also the body. For example, people often report migraines or other physical ailments as a direct result of stress. Likewise, you could turn this example into a positive interaction: people, who frequently practice meditation and whose minds are at peace as a result, often experience fewer physical ailments.