Can someone explain this part of the bible?

"It is easier for a camel to pass through the eye of a needle than a rich man to enter heaven". I've always taken that verse to mean that though a camel, to us humans, is an ungainly looking animal, since the camel has little to hold on to in the way of temptations and material goods, if he were a poor man (the little in the way of material goods), it would be much easier for him to give up what he doesn't have and to follow Christ than the rich man, who is more accustomed to the temptations and goods of the world and would find it harder to give up his material possessions and call on Christ to enter his heart and save him.