Marc Andreessen: 'Do what contributes - not what you love'

Apparently his tweets were controversial - but I'd agree... plus it helps to actually love doing something that contributes (BusinessInsider):

Better career advice may be "Do what contributes" -- focus on the beneficial value created for other people vs just one's own ego. People who contribute the most are often the most satisfied with what they do -- and in fields with high renumeration, make the most $. Perhaps difficult advice since requires focus on others vs oneself -- perhaps bad fit with endemic narcissism in modern culture? Requires delayed gratification -- may toil for many years to get the payoff of contributing value to the world, vs short-term happiness.