The apparent difficulties should not be discouraging, however. Just as in any other drawing problem you must learn to organize and simplify what you see in order to make complex issues understandable. You may notice that you have some inhibitions about looking at a nude body, and it could take a certain amount of training and experience before you can allow yourself to see it objectively. Certainly learning how to draw, in terms of being able to represent what's out there, is not impossible. Almost anybody can learn how to draw accurately.
Good drawing is based on being able to observe with some degree of objective accuracy.
An example I always give my students is that it is like learning how to play scales on the piano. Eventually everybody learns how to play scales, even the least talented people. They learn the rudiments of how to move the fingers. But in the same way you can't play Mozart without knowing the scales. Sure, you need to develop technical ability, but even that is subject to contradiction.