For the same stressful event, some deal with it easily, but the others have difficulty in coping with it. Likewise, some don't consider stress as heavy and frustrating problem, but the others become easily exhausted from coping with even a tiny stress which people commonly experience. What is a main factor that makes difference among individuals regarding reaction to stress? There are three main factors for it. First, hardiness is main attitude to have. Hardiness is what resilient people possess (Lilienfeld et al.; 2010, p. 473). Also, optimism is an essential personality to deal easily with stress. Sprituality and religious involvement is the last one to possess. These three components are important to be a flexible person in terms of stress in everywhere, in everyday life.
At this point, a question occurs to me. Hardiness as attitude and optimism as personality seem like these are inborn characteristics. In real life, it's easy to find that there are people who are relatively optimistic compared to the others, and there are some people who are naturally courageous and challenge-oriented. If these two are inborn characteristics, then only selected people are easy to lower stress? Are those characteristics possible to be learned as a second nature? The answer is yes. Blog post on the Psychology Today website by Deborah Khoshaba, Psy.D. describes hardiness can be learned with 3C's of commitment, control, challenge. Also, optimism can be learned according to blog post on the Psychology Today website by Deborah L. Davis, Ph.D. with eyes wide open. Even though it will be very difficult to change one's own accustomed characteristics, with an effort, stress would be relived in a short time without psychological pain.
This was a good post and I think your ideas are excellent, but the grammar and style are not there to support it. Work on wording both within your sentences, as well as the overall structure of the post, but otherwise nicely done.