Misunderstanding , unable to express one's thought , influenced by others , overconfidence , inability to gain courage to say sorry and save the relationship are among the few examples led to disturb one's life by making a small glitch.
Secondly there is nothing like a life manual by which you can lead a smooth and perfect sweet life , just hit and trial system runs life ahead.
Greed and that passion to be like someone takes away the contentment and priorities start changing and the goal of life shifts from living happily to living luxurious , Now problems arises and happiness fades.
