When you do or get something wrong do you come up with lots of excuses why you failed? Or do you admit your mistakes, recognise what you could have done differently, and try to improve in future?

Be strong, and recognise your mistakes. Trying to cover up your mistakes doesn’t help us improve ourselves or move on. Instead identifying areas you can improve on will help you recognise in future if you are repeating past mistakes, so you can change your approach.
God forgives you of every sin, and will help you change and improve as you recognise your mistakes. Be strong!