You are allowed to grieve the years you lost to mental illness. You’re allowed to be mad that it happened to you. You’re allowed to pine after the person you might have been had it been different. But don’t let that get in the way of your growing into your new self and following a wholly new path for your life.
If you ever think your parents are too hard on you just remember that Mufasa materialized as a cloud to tell Simba to get his shit together.