Hello, I'm a 18 year old man, i currently have my own work, a travel agency.
I don't know what is happening to me, i keep thinking that I'm paranoid and that is making me always depressed,sad and angry. the cause of this feeling is that I'm finding myself doing things i didn't used to do before or at least not that much. for example, I always feel that I didn't lock my car and maybe someone will come and steal from it, then i have to go to the car again and look at all the doors if they are locked or not. if i went out of my house, i feel the same thing that maybe i didn't closed the door and someone may enter the house, i go again even if i'm little far to look if i closed it or not. if someone payed for me price of a ticket, i keep counting the money many times maybe he payed me less or something, and many other things like that. all those things started to happen about 2 months ago, i was suffering from depression before that ,i visited a doctor then to see what is wrong and she said to me that this is just depression. but this visit was from 6months or even more. my parents divorced 4 years ago because my mom is paranoid and have another mental problem i don't know the name of it, she see things that isn't real, i currently live with my father. of course i'm not like her now but I'm afraid i will end up being like this

my whole life has just changed in this 2 months, I'm more depressed, sad, afraid to talk much to people, lost importance in things i used to enjoy alot. I don't know how to get out of this, can anyone help me with this ?