Failure - lack of success in doing or achieving something.
Inevitable - that you cannot avoid or prevent.
Deal with (something) - to solve a problem, perform a task, etc.
Self-esteem - a feeling of being happy with your own character and abilities.
Growth - an increase in the size, amount or degree of something.
Mindset - a set of attitudes or fixed ideas that somebody has and that are often difficult to change.
Regret - to feel sorry about something you have done or about something that you have not been able to do.
Attitude - the way that you think and feel about somebody/something; the way that you behave towards somebody/something that shows how you think and feel.
Reflect - to think carefully and deeply about something.
Forgive - to stop feeling angry with somebody who has done something to harm, annoy or upset you; to stop feeling angry with yourself.
Definition of failure from the Oxford Advanced Learner's Dictionary[