Dopamine is a double-edged sword. Although bad mood and low dopamine is not good for your success, we run the risk of others controlling our levels and, therefore, our behaviour. I'm not talking about drug dealers and dopamine peaks thanks to substances anymore: take for example a social network capable of increasing your dopamine levels in crucial moments, but not necessarily when it's better for you.
If you don't control your dopamine, another will, now more than ever.