I tried to quit once, but I wasn't really that determined. So of course, I started vaping again after about 3 days.
When I stopped, I didn't have any physical symptoms. I just wanted to vape. Since I wasn't vaping, I wanted to eat instead. That was no surprise, eating out of boredom has always been a problem for me, which can also be unhealthy when it is junk food. I wasn't moody or anything, but I was upset when I couldn't have that vape first thing after I got up.
Once I actually want to quit, I don't think there will be an issue.
Keeping yourself busy will help too, if quitting is what you want to do.