Piano Lessons

I'm slowly working towards all my pieces, but it's really hard to fit time in to practice with all my school work and everything else. I really want to be able to play the piano well, but I know I can only get there by practicing a lot, and working really hard. I've also realized that I don't know much theory, which is coming into play now when I'm trying to read the notes faster. I struggle with the notes at first, but I've realized that after a while I just memorize the fingering and placement of my hands, and don't really pay much attention to the music. I do reference it, but not as much as I should. I need to dig out my theory book that I never finished and work on that. The problem will be finding it since I haven't really worked out of it in years. I've become really serious about piano after the years I spent not practicing and brushing it off as something extra that I could just do. Now I'm suffering from those years of not practicing and not really caring, so I want to make up for it as best as I can.
I've also been playing "Primavera" so I can keep it in my repertoire and not lose it. But as I'm playing it and not worrying about messing up or having the stress of having to make it perfect, I love the feeling I get when I play, especially the slow cescendo towards the end. I don't know how to describe it, but it makes me feel alive and happy, and actually enjoying playing, instead of stressing out. I want to be able to do this more, and in order to do so, I have to work hard and practice hard, but I'm willing to do so.