Everyone does work, although the amount and the degree of intensity of the work greatly varies from one person to another. For some, the work for the day may be just getting out of bed; for others work stretches forth from before the sun makes its appearance to the wee hours of the morning. It is obvious that neither extremes are healthy; we should not waste our time doing nothing nor should we overburden ourselves with work. But what is the healthy middle? How much work and responsibilities should we commit to? Once again, there is a vast amount of grey area in which the boundary between doing too much work and doing too little is vague.
In the end, it really comes down to introspective judgement. When we were young, our parents where the ones who fixed the amount of work and play we do each day. But as 'mature' people now, we can no longer depend on others to tell us what we can or cannot do, but have to really on our own judgement and on God's.
It's not easy--definitely not--to determine how much we are capable of doing or how heavy the burden we can bear. Indeed, we bear the consequences of our actions: take too many responsibilities and we burn out; take too little and we find ourselves unproductive and unsatisfied. "Reach for the stars, and you will at least get the moon", they say. But, I'd say to them: "Reach for the stars, and you might not get back on earth".
Be careful what you reach for.