There is considerable difference between doing someting you love, and doing something you love with a bigger purpose which fascinates you in mind.. :)

You need to put in considerable thought to realise the latter.. And such opportunities do not come easily... they need to be created. But they give you true satisfaction. It doesnt matter what the purpose is, as long as it seems impossible, truly fascinates you, and will make you feel proud!

When such opportunities come by, it is probably worth dropping everything for them as they have the potential to take you very far...