Have you done enough for yourself?
Do you feel that you have done enough to live the life that you desire? Or is there something more you want to do?
You see, discontentment in every aspect, in every area of your life, can be dangerous in large doses, but in small amounts you'll be able to see and do stuff you could never imagine doing.
My discontentment allowed me to discover this site. Is that enough for me? No. But it's a great start to contentment.