I agree with what Burroughs is saying. Yet, I would perhaps phrase it a little differently. As C.S. Lewis said:
Indeed, if we consider the unblushing promises of reward and the staggering nature of the rewards promised in the Gospels, it would seem that Our Lord finds our desires, not too strong, but too weak. We are half-hearted creatures, fooling about with drink and sex and ambition when infinite joy is offered us, like an ignorant child who wants to go on making mud pies in a slum because he cannot imagine what is meant by the offer of a holiday at the sea. We are far too easily pleased. (From The Weight of Glory, 1949)I would say then that Burroughs is correct that contentment comes from having our desires met. As Burroughs has hinted at before; we as Christians are the most contented and at the same time most dissatisfied creatures. Therefore if we are to be contented it will come from having strong desires for the Lord and not having hearts entangled in the world. We will be content with whatever lot we have in the world because that is not where our heart is. Our heart has a much stronger affection and because of that we will not be dissatisfied by our circumstances, but rather we will be panting after the Lord. Satisfied, yet hungry! Burroughs, I believe, would agree with this. Yet I have chosen to word it a little differently than he does for the sake of clarity in the 21st century.