When you’ve achieved success in your activity or task, it’s a great feeling of accomplishment. But that sense of emotional high wanes down after a few hours, days or weeks. To continuously relieve that moment (those moments), I think each individual has to push his/her own boundary and go outside the comfort zone.
I believe when you evolve as a person, you keep reinventing yourself and you get to experience various levels and degrees of emotion. Those emotions will truly make you feel that you almost have it all.