Rather than asking for forgiveness, I see being aware of your own shortcomings as opportunities. Even though it’s easier said than done, just so you know that (1) This “state” of mediocrity is just in passing, not permanent (2) And that it won’t change until you put in the actions.
Self improvement is a form of self love, because you know you can do better. It’s about embracing that lesser part of yourself while working towards that ideal version coming from a place of love, not despise.