"Look on the bright side" is a phrase coined to tell people to be cheerful and optimistic despite difficulties they may be facing throughout the day. Being optimistic all the time is difficult, especially when we are coping with tragedies, yet this phrase aims to push us forward and look at positive events that have happened to us. To look on the bright side comes with time, when life is difficult, remaining optimistic is hard, but by remembering to “look on the bright side” you are reminding yourself that this isn't forever and it will pass. Making sure to maintain a positive attitude is known to benefit in the following ways - increased life span, lower rates of depression, lower levels of distress, greater resistance to the common cold, better psychological and physical well being, reduced risk of death from cardiovascular disease, and better-coping skills during hardships and times of stress.
Below are resources for increasing your ability to think more positively: