If you have a incredibly good teacher, you won’t get bored.
If not, you could practice in a different way every time. You could also write down what you practiced, what you want to practice next time, how much time you spent practicing and when you want to be done with the music you’re practicing. You could also read more books about the composers whose music you’re practicing. I always do that, it makes it be easier to understand the composer and his music. Or you could analyse the music.
I don’t get days off from practice, I have to practice every day. No holidays without practicing. And if there is no piano, you can practice on a desk
. If I don’t practice I do notice some more mistakes and my fingers are also a bit stiffer, that’s why I sometimes practice on the desk during maths (I’ve got a better teacher now, so I didn’t do this anymore in the past few weeks)
. I also play when I’m tired or when I’m ill. Playing piano gives me energy, so it’s even better to play piano when I’m tired. Also I feel less ill when I’m playing piano, probably because I’m just too concentrated on the music. Concentration and self-discipline are very important.
If you practice for exams, make sure you know everything really good, most people get very nervous and make a lot of mistakes just because of that. Make sure you can play everything with your eyes closed. Also make sure that during the exam you won’t pay too much attention on your technique and get so concentrated on your technique that you won’t be able to relax and play without musical sense. First you must make sure that you know the music so well, that you don’t have to concentrate on the technique anymore, and then you can play it with all your musical sense. Also it’s really good to record yourself now and then, sometimes you hear things you wouldn’t have heard while playing.