I hate crying. I always have, as far as I can remember.
I don't know about when I was a little kid, but from what I can remember I only cried when I was ashamed of something, and then that made me cry more because I was ashamed to be crying.
When I was in early high school (what I term my dark years- I was in a bad place) I learned to shut it off because I was crying almost every night for no real reason and I hated it- I was just letting depression and PTSD get the better of me. I can pinpoint the exact moment when I told myself "no, men don't cry. Soldiers don't cry. You don't cry. You don't feel." (this was really the first time I knew I was having gender issues, and also what occupation I wanted, lol) Since then I've been able to pretty much have a switch for all emotion in general and I can have almost complete control over the tears, unless its during that sucky time of the month that no guy should be subjected to. -_- At that point I can take control of it during the day, but if I'm particularly frustrated or something it makes its on way forward by the time I go to bed.
I really try not to cry. To me, it serves no purpose and just makes me feel worse about myself. I don't cry anymore unless I'm just so over-frustrated and stressed that I can't do anything about it. I've cried twice on this deployment, and other than that its the first time I've cried since that moment Freshman year other than during my divorce, and then I mostly just got so frustrated from having the same arguments over and over that I just couldn't deal with it, and when I cried he shut up and left me alone.
Being pre-t, I feel like I do a decent job of controlling it, compared to some of the cis-females and flamboyant lovelies (you know the type I'm talking about. Not trans necessarily, but flaming. (I'm allowed to use that word here, right?)) I know/ work with.
I just usually keep that emotion switch off so that I can perform my job efficiently and feel like a rational human being. Mostly I feel when people around me feel, and that's pretty much just because I have the inherent ability to be empathic sometimes. It gets confusing sometimes when I'm sitting with two people that are in completely different moods.