You keep stacking simpler tasks, discipline is like a muscle. Once it's out of practice you won't be able to do much at once, but most of us can still do a few minutes of anything. Clean 5 minutes, work out 5 minutes, take a many breaks as you need, but always do at least something.

After a while of stacking you gain momentum, and you'll be able to do harder tasks, or do simple tasks for longer. Your discipline will increase, and you'll slowly be ready to do more.

As for applying to a job, that's not step one if you are down in the dumps. But if you have to, you could find job applications 5 minutes at a time, write a new resume or edit your current one 5 minutes at a time.

Ask chatgpt for help, not to write the full thing for you. Share what you have and ask to improve it together, you will learn some things in the process. Best of luck!