I can't deny your application is well made, however, your past attitude in the past has not been good as far as I can read. You left on bad terms.

What certainty can you provide that your attitude will stay good and you won't leave in a bad way again?

I can't deny your application is well made, however, your past attitude in the past has not been good as far as I can read. You left on bad terms. What certainty can you provide that your attitude will stay good and you won't leave in a bad way again?