Hi Misato,
Twelve months is not a lot of time in which to dissemble old habits and develop new ones.
You didn't mention how you are when just left alone to yourself. Without a crowd. How do you handle that.
How do you perceive "me" to be?
How do you perceive "me" to be in a group, with women, with other guys? Who is "me?"
What behaviour do you expect of "me?"
I don't need to know the answer to these questions. They are for you, and you alone to answer.
Irrespective of those answers, you simply need to be VERY mindful of your place, attitude and self respect when you're round guys, until you develop the habit and attitude you're comfortable with in this situation. If this means you have to e a "wall flower" or "quiet as a church mouse", then do so; until you develop the behaviour you're comfortable with.
Huggs
Catherine