Is the concept of forgiving yourself compatible with the Qur'an

[Sarah]

Peace

Sometimes we make stupid, embarrassing or even evil mistakes that we regret and wish to forget, but our subconscious keeps reminding us. So you repent to God and don't know if God's forgiven you but it keeps bothering you. Should you forgive yourself at this point?

[Jafar]

Should you forgive yourself at this point?

Yes and your subconscious will keep on reminding you when you haven't.
It will be easier for you to forgive yourself when you routinely practiced it towards others, thus forgiving others. #MirrorPrinciple

You will then enter the next phase about acceptance / non-judgmental.

When you routinely practiced acceptance (non judgmental)  towards others, it will enable you to naturally acted in the same manner towards your own self. #MirrorPrinciple

When you're on this phase, 'any mistake' will be accepted and you will see it as an opportunity of learning and understanding.