Give yourself permission to do things part way.
I don't know where you got the idea that you have to do everything ALL the way or not at all. You might not know either. But trust me this way of thinking is stealing your life. It is causing you stress and robbing you of your joy. Now the idea of doing things half way might be scary, but it just might be worthy of exploration and experimentation.
Explore the idea of doing things part way.
If you don't have time or energy to clean the whole house, clean the kitchen, or at least do the dishes. If a cleaner house is the goal, even small steps will get your there.
If you don't have the money to pay a bill, don't just ignore it. Call them up and make a payment plan. You'll have less stress and keep yourself out of court.
Monitor a college class. You are still going to learn something without doing all the homework
and getting a grade. Sometimes this doesn't even cost you a dime. You can even drop out anytime you please. You can give it the "old college try" without the fear, who knows you might find out you have what it takes to go for a degree.
Join the club your interested in, even if you can't be involved in all the activities.
You don't need to read every page of that self-help book everyone is raving about.
You could learn something in just a couple of chapters. You might find a baby step that changes your life in a few pages.
You know you will never be able to run or even walk that 10K race.
But training for it will improve your health and fitness level. Going out on race day might be a hoot even if you just hand out bottled water.
Don't have the energy to walk through the whole museum? Do what you can and
enjoy what you can.
If you are caught up in all or nothing thinking; you are missing out on life experiences and causing yourself stress believing you have to do it all or finish it all before it will be of value or you will be of value. Take out that journal: What do you think you are afraid of here, what is the real fear?
Give yourself permission to move beyond the fear.
Give yourself permission to do it wrong.
Give yourself permission to do it part way or your way.