Many people practise the basics untill they can cast there first spell, and then stop practising. You have to practise the basics all day every on a dialy basis until you give up magick.
for example "i can cast spells am going to give up now" that is not the way to do it, if you stop practising the basics you will start to loose focus again and wont be able to cast spells or do anything. so you have to start right from the beginning again.
Thats why we call it the "basics" because after we are good enough at the basics thats were our journey starts and then we can start to do more complex things and the more you do the basics the more experienced you are in things.
so i hope you dont give up, stick too it to become better.