'More' will read as 'More' any time you read it, and hence you never reach it. Hence, 'Success' is a lifelong quest.

'Enough' will read as 'Enough' any time you read it, and hence you don't have to wait another moment to experience it. Hence, 'Happiness' is just a matter of realisation.

Wise are those who aspire for 'More than enough', realising that they have 'Enough' in the here and now; yet they go after the 'More', searching where and how. This is the path to being happily successful and successfully happy.