Ok.....so whats left?

Yesterday when i got home from work i went inside and chilled out on the game for a bit until my wifes show came on and i turned it off so that she could watch it, All of a sudden i felt like working out or atleast hitting the bag for awhile..... i went out got my music going and was putting my gloves on when i tried to pull the last bit of glove over my wrist with my mouth......My front tooth on my partial ripped off and REALLY REALLY PISSED ME OFF. I just went into raving lunatic state and bent over grabbed a 45lb plate and hurled it across my garage about 15 feet or so then went inside and tried to calm myself down then i super glued my tooth back into placeso i dont get fired based on my appearance as this has happened ALOT at my place of work in the past and just recently as well. After all of this i went outside and sat in my truck while blaring music and trying to fight the tears but with no success as they started to pour from my eyes the rain from the sky.
I have no reason to hit the gym anymore but i want to so badly and its tearing me up inside, I keep asking god why this has happened to me at such an early age and still i recieve NO answer no sign no nothing and its not surprising.
Nothing is left for me here......Im starting to question why i havent shot myself dead yet. Work isnt helping either, All i do all day is worry and most of the time its stuff that doesnt even end up happening.
So i wonder even more right here and now why i have allowed myself to keep living.