Anger outburst and Anger. I feel badly!

To continue to previous question. I did not think it's not anonymous and wrote 6 to 8 posts on managers employees and one person who had made fun of me . In all others it was generic but in anger and frustration I mentioned his team name and zeroed him down except his name. This Thursday my manager who is good said there is a meeting at 4PM with HR and other higher manger . I knew I am caught . That meeting was to know why I had written . Was there any data or facts which made me write these comments against company management and managers and system. I said as I though it's anonymous I wrote. Their questing was based on this only . It could be addressed by talking to any higher manager or HR or my manager itself . I excepted my mistake . They said what happened in past I have written after waiting for 2 yrs . Pattern is anger outburst . How to TRUST you is the question. Work wise I am good . Need some counselling i feel badly