If you suffer from rumination or can’t get over regrets I think your worst sin might be pride because to be stuck in regret is to think that you had full control over that past situation instead of thinking maybe you were never as powerful or intelligent or wise as you believed

The reason people don't achieve big goals is because they don't realize that the only source of truth is making mistakes. They soak up advice and theory, expecting it to be an exact match to their mind, experience, and situation just to fail once and give up completely.