I cry a lot. Being pregnant hasn't helped that in the least. While I now get weepy over the smallest little things, I think a good cry every now and again is good. Sometimes even healthy. Crying is a natural reaction to stress, fear, anxiety, pain, and even happiness.
Don't be afraid to cry. Sometimes you just need it. Everything looks a little better when you can wash out all of the negativity and pent up emotion. Just let it out. Crying isn't a sign of weakness. Sometimes other people need you to be strong for them, but when you're alone, don't be afraid to let your feelings out. Keeping stress and emotions pent up is not healthy. It can hurt you physically.
I am so grateful that my husband can cry, and that he understands when I need to. Sometimes life just gets to be too much, so empty your emotional bucket so that you have room to catch whatever else is coming. Even if the stress you are feeling is anticipation for something wonderful, just letting everything out can so often leave one feeling refreshed and like he or she can keep going.
Men, (and women) if you're not someone who cries and you don't understand it, just know that some people need it. It is a coping mechanism. It might seem to you like someone isn't coping well if they cry, but just be supportive. Put your arm around them and just let them get it out. Especially if it is your spouse or a family member, just hold them. Let them know that you're there for them, and support them.
(If you are unhappy all of the time and crying as a result of that, find a good friend to talk to, pray, and if necessary, seek professional counseling. Depression is real, but it is not something to be ashamed of. If you think you might have depression, talk to a counselor or doctor. If you find that your sadness and stress are high enough that you can't cope with on your own, ask for help. It really is ok. And if you need someone to listen while you just get all your feelings out, I'm here for you.)