like everybody tells you...at four hours you are not in a position to make any judgements about you flying...thats the function of your instructor.
you are being too hard on yourself and it will reflect in your flying.
lighten up and stop expecting too much too soon.put your faith in your instructor/s.
in my experience...the older you are the longer it takes to acquire the skill but you will get there and in the end remember that even if it takes a little longer it still adds to your experience.
enjoy what you are doing....your flying will be better for it.
good straight and level is one of the most difficult things to do properly.you will get a lot of fun out of the challange and your flying long term will be the better for it.
do'nt forget good straight and level is achieved by having your eyes outside the cockpit 8 out of every 10 seconds and 2 checking the dashboard...and most importent...trim it out .
as one contribitor said...the aircraft was built to fly..( if you were you would have feathers ). it knows how to do it..so do'nt overcontrol it...just control it.feel what the aircraft is telling you but do'nt allow it to do what it wants.
so take it slow and leave the worrying to your instructor|s...if they feel you are wasting your money i am sure they will tell you but even for them its too soon...so how could you possibly make a meaningful decision at this stage.
good luck and do'nt worry...
