আমি কি ভুল করলাম?!

Ami hsc student(science) ... ebar amr exam clear krar kotha chilo bt time wasted r presentation na niar karone ami decide krci next bar exm dibo ebar kichui krte parbo nah... now I kinda feel guilty about it... amar ki 1ta bochor wasted gelo?! I would like to know anyone's opinion about my situation!!!