Nothing motivates me

Im 20f, my mental health has been really bad and Ive let myself go weight wise. I want to lock in and but everything feels so hard and heavy. Showering takes all my energy out of me. All of my energy is kept to keeping me alive. It’s exhausting. I get discouraged easily if I start. When I tell u nothing motivates me, nothing does. Ive thought of every scenario possible and I will always find a way out. How do you guys stay motivated and disciplined while barreling with your mental health?