Everyone deals with challenges in different ways that are dependent upon their belief systems. Some use optimism to get through. Others a subjective type of realism. Others still have a tendency towards pessimism.
All are valid for the person in question. I personally, and particularly as a Christian, am an optimist. I think Trina is the same.
My view is that a non-optimistic outlook can not encourage a positive outcome. Creativity and achievement is often stifled by realism and pessimism. Having said that, I do believe that optimism should be tempered by insight. Although not necessarily hindered by it.
I guess what works for one may not always work for another. Just my thoughts!