There is no peace or happiness in our worldy life. Circumstances create turmoil and annoyance.
One can reach Krishna only by practicing devotion.
You are driving car, running with seventy miles speed.. it is smashed accidently. But you are alive then you have to change your car. Similarly, we can drive this machine called the body for so many years; then it becomes old and we have to change it for another machine. This is the process of birth and death.