It's challenging. To say the least. To dive through life, day after day, working through the motions, seldom enjoying what we do. But we can alter that. May be we can shift our mindset, or the work we do. Or we change the level of commitment we have towards our work.
Whatever be the case, in the end, it will pay off. Working hard, in the right direction, is a reward in itself, but other types of rewards do come into light. Slowly, but surely.
It's challenging, alright. But not impossible. Not even close.