Sometimes, I feel the same. Don't focus on finding a purpose for moving forward in the right direction. Focus on getting out of the rut.

Start off by cleaning up your bedroom. Do your bed. Start small. Go for a walk. Have a nice meal. Call a friend. Try to do all this on the same day. You'll feel better. Well, at least it helps me.

Build a routine. It will help you.

Having read some of the comments I agree that having someone that you love and relies on you helps you keep going, but forcing yourself to go-on with life just thinking of that is not the best. Make yourself feel good first. Find some joy in the simple things. Think about the people you love. But find peace within yourself. For that you need some order around you and inside your.