It is the internal bliss that should matter to any person, not the external, sensory, objective and the worldly temporary joys. If you can develop the inner poise or equilibrium that is undisturbed by the ups and downs every day presents to you, that is a sure sign of real SUCCESS!
PS: I have come across several 'worldly definitions of 'success'. But this clarifies beyond doubt
What does 'success' mean to you? Your definition of success?