The mind is the source of happiness and unhappiness by what it chooses to compare the experience with. If it chooses to compare it to something worse then it will create happiness, gratitude and pride but if it chooses to compare it to something better then it will create unhappiness, bitterness and envy.
Gautama BuddhaPain in life is inevitable but suffering is not. Pain is what the world does to you, suffering is what you do to yourself [by the way you think about the 'pain' you receive]. Pain is inevitable, suffering is optional. [You can always be grateful that the pain is not worse in quality, quantity, frequency, duration, etc]
Gautama BuddhaWhen one is overcome by this wretched, clinging desire in the world, one's sorrows increase like grass growing up after a lot of rain.
Gautama BuddhaIn our interactions with others, gentleness, kindness, respectare the source of harmony
Gautama Buddha