an emotional reaction

It was a sunny day and I fell exhausted cause I had been washing my car and repairing it's stuff for almost 4 hours ....I loved my beautiful black Lamborghini car , my son had been buzzing around for a couple of minutes saying something but I didn't payed attention cause as usual he use to ask “Daddy! Let's play” ...... while I was busy in my tool box I heard some noise like somebody was scratching my car I yelled loudly “Son... is that you”...he came running to me holding a screw driver , at the edge of it I saw some black particles and I quickly took the wrench near by and hit his hand ....“How dare you scratched my car”.....but when I saw blood on his hand I had a great regret on my reaction, I rushed to the hospital ...The doctor told it would take few weeks to recover...when I saw my son on the bed I really felt guilty..he asked me “dad will I be able to write again”?...but I controlled my tears and apologized him ....he forgave me ! The moment when we were going back to home I thought to have a glance at the scratches ....and when I read it I felt so guilty...I could do noting but cry out of my guilt It was written “DADDY! I LOVE YOU”!....