The thing is, I think most would agree that solving in and of itself *is* boring. For most the actual fun parts are learning new things, talking to other cubers and or going to competitions. Therefore, if you're finding practise boring, I would suggest learning something new or maybe talking about various aspects of cubing with others.
For a lot of cubers, practise also eventually becomes a more meditative frame of mind so I would recommend trying to listen to music or podcasts etc.
But the bottom line is that if you're finding cubing boring, don't force yourself to do it. Come back when you feel motivated to do it.