I read about learning in my free time. Something to consider!
Taking time to learn from your mistakes helps you learn and do better. Each time before you take a long rest you may spend 30 minutes to review your actions of the previous day. Choose a skill check, attack type, spell, or or saving throw where you rolled a d20 and failed at the attempt, you gain a +1 bonus to that specific action after your rest for the next day until you have a long rest.