i used to feel like that all the time. sometimes i still do. your mental state affects how you think and how you go about things, your energy and focus, etc. it can be very frustrating if you feel hazy or disoriented or yeah i guess cloudy is the best way to describe it, like you're in a fog and youdont know what the f, or how to go about things or how other ppl manageto be so sharp and crisp or diligent or whatever. dont worry, itll go away. it goes away by itself most of the time, with a good day or good lighting. lighting! your surrounding settings are important. also, i find that listening to music, whatever suits your mood at these times, helps a lot too. dont stress over it, revel in it, and then be done.