The most difficult people to deal with are people that are bitter. Bitter people see things very negatively and somewhat blame others for their past and current life situations. Of course, we encounter situations in our lives that are not favorable and they cause us to be angry. The key is not staying in that state day-after-day, month- after- month and year- after-year. It's important when unfavorable things happen in our lives that we truly access the situations objectively and occassionallly ask, what did this come to teach.