Hey,
hope you're feeling better than when you wrote this; sometimes all I can do to get out of bed is to make tiny, accomplishable goals to build momentum. Start by taking a shower, which I like to think of as 'joining the day', and just focus on washing off negativity with the dirt and dust. Follow biological cues like eating every 3-4 hours or getting outside for just ten minutes for fresh air and vitamin D. The smaller the goal, the easier it is for you to succeed, and with more success comes more motivation, eh? Good luck!