oh my god....you people. dont make me post some of my old work in here, i swear i will!!! if you feel self conscious just look through some of your older stuff, and compare it to where you are now. its good for your self esteem, plus it makes it easier to see the areas you need to work on most. alot of the time we tend to repeat the same mistakes over for no reason, other than its how you learned how to draw it. the best way to correct this is to find simialarities between your new and old drawings, then begin to focus on the areas that are weak in both drawings. the more you work on it, the more natural it will become to look.
keep all of your old work, especially in a place like this, where it cant get lost in an attic. it will not only show your improvement to others (possibly inspiring them), but it will also be good to check page 1 every now and again, to give yourself a self esteem boost. even a little one, like "oh good my faces are looking better", can be a good mental stimulant on a strained mind.