somedays are like that. you need to develop the courage to get up and go win what you want. you can do it. trust yourself friend. i know it's not easy. but beleive in yourself and try to get up
if this is just one day then you can take a rest for the day.. if this is happening often.. then you should try physical exercise every day. just 4-5 minutes easy exercise in morning is also enough.. it really helps..