Not sure what to think
Hello, everyone. I'm just looking for a little feedback about a recent change in feelings.
Last year, I turned 30. Around that time, I started to feel like a significantly different person. Normally, I am a relaxed, mostly positive person. I've never really been super-energetic, but I've considered myself pretty cheerful for the most part. As of a few months ago (around the time I turned 30), and usually just once in a while, I'd start to feel less and less cheerful. Things that normally wouldn't bother me started to bother me a lot. Stupid little things would make me angry. Irrelevant things. Like there was a box in the hallway, and it was in my way. I usually hid it pretty well and I would never yell or get violent, but some people have noticed I seem grumpy all the time, which is kind of out of character for me. And it would only take a few of these types of irrelevant things to make me break down and cry. I haven't really talked to people about it. One night, I cried for about an hour for no reason. My wife and I talked about it for a little while and I felt somewhat better. I haven't gotten that low in a couple of months. But I still feel like a different person sometimes and it's a little disconcerting.
I've never really thought I had depression, but I'm starting to think I might. I do feel like I might have anxiety issues, but they're pretty mild. Two people in my family have diagnosed depression. For my job, I work the night shift at a place where I usually have no one to talk to and often have nothing to do. And lately, I've been working stupidly-long 14-hour shifts. Maybe that's a factor. I don't know.
In any case, I'm just here to see what you folks think. I'm kind of at a loss and am too chicken to talk to someone in person. Thank you in advance.