Which is better career if compared in terms of career growth prospects,job satisfaction,money etc -

I am 35 yo man from Calcutta,India.I have done BSc(PCM) & recently i completed MBA(Mktg) from Sikkim Manipal Univ.I left my earlier job of Medical Representative as I didnt enjoy the job at all as I felt sales was not my cup of tea.Plus I couldn't meet the sales targets.
I have no particular liking for either field.I want to earn good amount of money ,enjoy the job as well.