If you're still expecting to be who you were when the pandemic started, and especially if you've stayed at the same company, reflect on how you view yourself day-to-day. 

It's entirely ok not to hold yourself to standards you set when you had more energy, less stress, and less overall mess occurring around you. It's ok to set the bar lower. You're not a low performer for it. We're all tired—we need to give ourselves some leniency.