Frustration

In this so-called highly competitive world, Frustration would be one of the most common state that most of us would be in some time. Why do we get frustrated? Is that when we know something or realized something but not our beloved ones or work mates with whom you need to deal with?

Just because we know some thing does not neccessarily mean that we have understood it clearly. For example if you know the solution for problem A and you end up explaining to your work mate, after several hours of discussion you are in vain and frustrated thinking your work mate is a real dumb person to understand this problem.
This may have happened to most of us....may be because your work mate's prespective is different from yours. He may be hard to be convinced by anyone...may be strong or adamant on his opinions due to his conditioned mind...

Samething happens within our families as well...everyone of us would be having different experiences and life surrounded with different societies, age group or beliefs....our mind gets conditioned based on these external factors eventually....and we end up conflicting our thoughts even with our parents, siblings, spouse whose external factors would be same as ours before few years or months.....
does that mean people change??? okay...how to rectify this frustration...may be patience....wait for others to understand or probably better way would be dont try to convince others....who are we to change others mind? ..Tolerance....that would be the key to get over frustration....wow...too many implications on our life....why do we need frustration in first place?