Parents can SEEM harsh. What they see is you putting so much effort into something, which is great, but then they see you NOT doing something else. This is what makes it frustrating. They see what looks like your magic taking away from your responsibilities.
How often do you have a deck of cards in your hands?
I too was often getting in "trouble" from my parents for spending too much time doing magic. My father in particular, which was ironic, as he's the one who taught me magic, lol.
BUT, their concerns were justified. I WAS falling behind in other aspects of my life, school in particular. Mind you, it wasn't just, or even mainly, because of magic. My main vice was actually just watching t.v. I was always putting off my homework to watch 'just one more show.'
Any who, the point is, one of the biggest steps you can take is when you eventually see what others see. I know you are not supposed to care 'what people think,' but sometimes, someone looking in can see things you can't from looking out. Unfortunately, parents being so close, and the natural conflicts in the child parent relationship, can make this a VERY hard critique to accept from them.
I am not saying you are doing wrong, I cannot possibly know everything about your situation, I am only speaking from experience.
I re-assessed my life, and put my focus back into school, among other things, made sure I was on a straight path somewhere, and now, the majority of my income comes from magic.