Your opening line tells it all “I don’t know why everything I do fails”

Change your internal dialogue. Do didn’t fail, you nearly succeeded! You have successfully got a bueautiful daughter, you are a successful mother, you have a successful life, you are just one skip away from getting the job.

Wether you realise it or not, your inner thoughts radiate outwards. Think positively to have positive outcomes.

As Henry Ford once said - “Whether you think you can, or you think you can't--you're right.”

The next one is yours. You just need to believe that.

Good luck.