Help me to help myself

Today found myself still in a very mischievous mood, perhaps even worse than yesterday, but again it was just because I'm happy. But still I know that is no excuse for some of my behaviour because I'll admit that I became somewhat aggressive with it today. I've not known this before but some of my humour was replaced by aggression; and in hindsight it was not nice, it was very ugly in fact. 

I don't know why I acted in this manner and it does not suit me; it is not me normally. I even acted in this manner to my best girlfriend; who is one of the last people in my life that I would want to knowingly upset. I'm so very sorry to you in particular; I pray you did not take any of my actions personally. Restraint, I know, I need to learn it. 

So here's some words of advice from someone very close who knows me better than I do and knows how to handle such situations. He posted this in a comment on my blog last night but it deserves a proper post; because it is the best way to let me know I'm taking things too far and may just help me to stop ruining friendships. 

for anyone reading this who works with him heres some advice to deal with him when hes in one of these moods. this works trust me i know. i have to put up with it each time we go out. its a wonder hes still alive. 
if his humour gets too much you have to tell him in no uncertain terms. STOP YOU ARE TAKING IT TOO FAR usually works. he does not understand any other terms. but try and not upset him with abusive language as then he takes it out on me by not speaking. thanks lol.