Suffering is happening essentially because most human beings have lost perspective as to what this life is about. Their psychological process has become far larger than the existential process, or to put it bluntly, you’ve made your petty creation far more important than the Creator’s creation. That is the fundamental source of all suffering.
We have missed the complete sense of what it means to be alive here. A thought in your head or an emotion within you determines the nature of your experience right now. And your thought and emotion may have nothing to do even with the limited reality of your life. The whole creation is happening wonderfully well but just one thought or emotion can destroy everything. – Sadhguru