selfish?????????

Why is it dat we  need reasons to miss some one and the reason, most of the tym is do wd our selfishness... y do we remember our family,  friends only in tyms of distress,sorrow and y do our friends remember us only during thier bad tyms...... y are our friends not wd us wen we need them the most?

As mush as i value my  buddhist values and upbringings,  sometimes i cant help those negative things lingering into my brain...please God, help me free myself from negative emotions