Paranoia???

On Feb 13th it will be my 7 year anniversary at my company.  This last year feels like I'm back in High School.  I feel like some of my co-workers talk behind my back.  IM about me.  It really makes a person feel like crap when that goes on and I'm not sure what to do about it except keep my distance.  Could it be that I'm just paranoid?  I tend to believe that if you feel like people are talking about you behind your back you probably aren't wrong.  I need things to change at work.  Maybe I should just eat at my desk from now on.  Stay away from the culprits.  Even some co-workers that I had thought were my friends but certainly don't act like it.  I guess it's best to just go to work, do my job, go home.  Keep it professional.  Today, I'm feeling emotional and fragile.  I just hope tomorrow is a better day.