Since I do not have any job, so I am already full time on bitcoin & it is not a bad option as I am earning enough for my pocket money .

Grats! I assume you don't have a family to care about and you don't have to pay bills right? I think you are a student and that's good that you have the opporunity to earn some extra pocket money.
I was in college even though I do not have a job but I also have another focus as complete a task from college and my time is divided between college course. so I can not like you. in full time work in bitcoin.
but despite that I use the break is a time to work in bitcoin. probably around 8 hours to work in bitcoin

is could call full time ?
sure 8 hours working should be called full time, more than that is overtime, or rather called slave

i'm bad at studying, especially in memorizing, so when i was in college i'm a slave of college's tasks with no break time. but if i had known about bitcoin during that time, i think i would have been like you.