Yes, that’s a good idea. Also, when you identify the negative belief, write a positive statement that counteracts it. Repeat that positive one often, and try to feel the good feeling it brings you. Eventually, it will be “programmed into your brain” and the new belief, with the new feeling will be your first thought, and you won’t have to fight the negative thought anymore. It’s like your new programming will overwrite the old programming. It takes effort and time, but it works. It took me a year one time before I realized my work had paid off and I no longer was daily criticizing myself.