As my routine work, I study English on skype.

I talk to teacher of oversea.

I also took a lesson today., but I was not concentrating that today.

I talked my opinion, but I was not able to hear a story of teacher.

I had not been concentrated.

My concentration was getting better from middle of lesson, but I missed to catch most of speaking of teacher.

That's waste.

As I study English everyday, the concentration is getting bad.

I study English for a long time, the concentration and motivation is high.

I shouldn't study English everyday?

Which one is best for me, everyday or sometimes?

maybe, Need concentrative, Need motivative, EVERYDAY!!!

Difficult ;-)