Blessing is an empowerment to succeed,to prosper and when you are blessed,it puts you above,it colors your life and puts you ahead of others,that's why Jacob had to go for it. You can be rich but not blessed.
Jacob did everything possible aided by his mother to ensure he gets the one time blessing from his father Isaac.
DO YOU KNOW? Jacob never lied when he said he was the first born. This episode explains better.