Ecclesiastes 4:4 says, Again, I considered all travail, and every right work, that for this a man is envied of his neighbour. This is also vanity and vexation of spirit.  Solomon said when he then considered all the right work, all the things that neighbors envied, it still amounted to nothing.   He had just talked about the corruption in the world, but now he said even those who came by their possessions honestly would be envied.  Even as God's people, we often look around us at others who are better off and think that if we only had what they have, we would be happy.  Solomon saw that this was not the case, and so should we.  Again, the things of this world, even when acquired honestly, will never bring true satisfaction.  Verse five says, The fool foldeth his hands together, and eateth his own flesh.  I believe  Solomon was saying that those who just sit idly by without being willing to work are as a fool.  They end up so hungry they feel like eating their own flesh.  We were created with a purpose, and that is to serve God and take care of His world.  When we decide that we have no purpose and the world somehow owes us a living, we are not living by God's plan.  No matter how bad, or even how good, the world becomes, our purpose never changes.  Verse six says, Better is an handful with quietness, than both the hands full with travail and vexation of spirit.  I believe Solomon was warning against wanting more and more of material things.  When we have our needs met, we should be satisfied and learn to be happy and live a contented life.  It is when we want a double hand full, or more than we need, that problems begin to arise.  This does not mean that we are not to be ambitious, but that we are to be ambitious about doing the will of God.  We are never to be overly concerned with attaining and keeping material things.  If we are, this will only cause us worry.