half empty or half full???

...depending on one's point of view or interpretation...one can be optimistic (half full) or pessimistic (half empty)...i've met many people in my life who always have a downbeat view of life...people that have the tendency to look at the negative side of the things...worse, unlike the half glass story, they prefer to worry about the 5% anomaly rather than looking forward to the remaining productive 95%...so everything looks worrying to them...there are so many 'if's that need answers which unnecessarily create uncertainties...in a positive way, asking 'if' questions help one to self-learn and become more creative and innovative...that's what i always believe...but asking too many 'if' questions can be very negative as well...which can affect their way of life...work, family, friendship etc...we are not living in a perfect world anyway...that's the beauty of life...