procrastination

I have a severe problem with procrastination

It has come to bite me in the ass a ton

one time in my spanish class I had a big assignment I didnt do because I would "do it later" My grade dropped to an E and it took a while to bring it up. Same thing happened in my history class, dropped to an E and I had to get it back up. I havent really done anything about it other than doing assignments right then and there to get it over with and it's worked for a bit but I still have some missing assignments and the habit of putting stuff off still hasnt changed. 

Its not even just for school either, some stories and drawings are never finished due to this, of course not as often for school but I still need to work on it

I'll do it later I guess