Sometimes we hold onto people, and other things in our life so tightly making it very difficult to let go. We believe we are in control only to wake up to feelings of despair, pain and hopelessness.
Just imagine having a tug of war, with you holding onto a rope as tight as you can on one end and the stresses in your life on the other. Who do you think will win that war? At some point, you have to learn to let go. Otherwise the struggles you are carrying will take you down to a life of misery.