I suggest a good place to start is turning off your caps lock.
Second, there is no quick and easy method to this. Its a matter of time, patience and a lot of hard work. You have to be vigilant in paying attention to your thoughts and emotions and trying to take control of your emotions when you see them welling up.
Also, be aware as a female, who seems to be naturally emotional, you will always have a level of being emotional, so you will have to learn to accept some of it.