Well, it kinda doesn't matter what you're procrastinating about, just that you are. Hence the discussion of the baccalaureate, while lovely, is kinda pointless. It's a tangent and it - tada! - wastes time.
I think you might see where I'm going with this (and, BTW, I was going to make a procrastination joke about answering you tomorrow).
Sit down and make a priority list. Nothing long - this is not intended to be a long dodge of your work. Instead, it's basic stuff. Something like -
1) Math homework
2) Geology homework
It can be daunting to think you have tons of stuff going on, and that can sometimes paralyze people into inaction. Furthermore, checking off your accomplishments can give you a boost, give you the feeling that you really are on top of this stuff.
The list should be short. Don't include crap like doing the laundry or petting the cat or whatever. Schoolwork is your priority and you have to do it.
But once this time has passed, might I suggest a bit of a cost-benefit analysis in your life? E. g. there are things that take several hours but are absolutely worthwhile. There are others which take a few minutes but aren't. How do you weigh those against each other? And consider the replicability of some experiences. E. g. if you take time out every day to watch soccer on a tape delay, the truth is, it doesn't truly matter when you watch it. A delay of 2 hours is not too different from a delay of a day. Because I suspect that it's not just schoolwork that's at issue here - you may not be prioritizing your life too well, and it can help with overall procrastination to start doing that in all areas.
Good luck on your exams.