Although you are learning what you consider beginners stuff, you can concentrate on listening, technique and producing a good sound. You might be feeling stuck because you are concentrating too much on the notes itself -- even if you can press the correct keys is the correct order, that does not mean that you can play the piece.
Try concentrating on the sound instead. This is true for every piece, however simple -- try different ways of expressing the music. Loud, soft, legato, staccato, phrasing and breathing, imagery and the legato line, stresses, textures and musical aims, etc. Once you have a good sound in mind, try to find movements that allow you to make that sound. Are they comfortable? Are your hands relaxed? Can you relax them more whilst playing the piece. How are you pushing into the key? Are you using your whole hand/body or only your fingers? Can you play it the same way many times? Is your movement allowing you to do this?
This is an advantage that adult learner has over small kids. They are able to concentrate for a longer time on pretty "boring" tasks like these and understand the necessity, so long as they have a clear goal in mind.
My opinion is that you have to work on these immediately when you start learning any instrument.
The other thing is that don't confine your music to what you can play. Listening to good performances in concert and on CD helps with musicality. Read about the composer you are playing, what else did he compose? What was his life like? Read about the history of classical music, the different periods, who was influential and why. What/who do you like, and why? This forum is a treasue trove.
I agree with the previous posts -- if you really dislike the piece, don't play it! There is a lot of easy music that is fun and beautiful.
Lastly, remember that many advance pieces can be reduced to something very simple. Take for example fantasie impromptu -- the main tune is actually really simple, so don't take what you are learning for granted!
al.
Topic: the early hurdles