Part 1
Here is why it's impossible to run after, let alone come to possess real peace of mind: the same moment we set out to do so... we disturb it.
Part 2
Here is the unseen cause of the great circle of human conflict and suffering: we unconsciously resist the appearance, realization, and hence the reconciliation of (our) collective and individual karma, accordingly. In other words, argue it as we may, our unseen resistance to unwanted moments in life is the same as rejecting a celestial invitation to be re-united with the Divine.
Part 3
Nothing negative has happened to you, until you wish it wasn't happening.