youthfully

adverb [程度副词]年轻地，无经验地；精神饱满地

Able to see the distortion he caused, I youthfully declared that if I every ran a business, it would be on the reverse principle.
明白了他何以能使人心扭曲，年轻的我暗下决心，他年我若自行创业，一定运用完全相反的原则。