Nothing but the truth...
At first, we had a passion for what we do and we carry it out with enthusiasm. But in the long run, change is inevitable.
Just like you let out when one is not fulfilling those things they aspired for in that thing they love doing, to divulge the certainty, the person might be pessimistic and inclined to deviate to another bid in other to live a fulfilled life not minding abandoning the thing they love doing.
However, im insinuating, if what you love doing does guarantee a better future for you, isn't better to deviate?