My girl gives up on something very easily. She feels dejected and lousy about herself after failing. How do I teach her perseverance and how to think positively and still go on amd mt give up?

Maybe my girl is young thus she might be easier to manage? I will tell her it's ok, no problem, let's try again. I will look at her at eye level and ask if she understands what is going on or happening or what is required for her to do. If the answer is no, I will go through with her again or call for a time out then try again when both of us calmed down or I just simply said shall we do this work together? When she succeeds, I will tell her "look you can do it too, well done" followed by a great big hug, shower her with kisses and praise her for trying. Sometimes I just bribe her with stickers if she gets too stubborn to try.