Stop feeling sorry for yourself, it doesn't work. Follow the advice of His Holiness and practice compassion. The only thing feeling sorry for yourself changes about your life is that it makes it worse.
The question of what makes us happy is likely as old as human cognition itself and has occupied the minds of philosophers, prophets and scientists for millennia. In The Happiness Hypothesis: Finding Modern Truth in Ancient Wisdom, psychology professor Jonathan Haidt unearths ten great theories of happiness discovered by the thinkers of the past, from Plato to Jesus to Buddha, to reveal a surprising abundance of common tangents. (For example, from Shakespeare: “There is nothing either good or bad, but thinking makes it so.” From Buddha: “Our life is the creation of our mind.”)