It is not doing what you love that will make you happy, but loving what you do.
Doing what you love is a dream, and for that dream to come true, a whole lot of things you have no control over have to go your way. No matter how badly you might want it, no matter how happy it will make you if it comes to be, you are leaving an awful lot to chance.
Loving what you do, on the other hand, is a decision – one that you can actively choose in every moment. When you find something to love about everything you do, and you practice this as often as you can, and in the most dire circumstances you can imagine, you hold your happiness in your own hands.
Nothing can touch you.