I dont know what it is man, but whenever I laugh at something it's usually only for like 3 seconds and this happens rarely. I haven't cried in ages there were times where I was expected to cry (watching my dog die) and I just felt nothing.  
The only emotion I actually feel strongly is anger. Be it me playing video games or someone being anoying, I easily burst into fits of anger and there is always collateral damage.  
This is influencing my work ethic and also the quality of work that i'm producing.   
Not sure what to do anymore.