I've fallen into an unproductive slump. My sleep schedule is messed. I have work to do, but have no motivation to get it done. This is not my typical self -- I used to have no problem just a few months ago studying 8 hours a day, but now I'm having a hard time focusing for 30 minutes.
How do I snap out of it?
methylphenidate or modafinil
>>18661807
vitamin D3.