Oh (((( @DoroMona ))))

Firstly, you did a really good job of describing the situation...

You've been disrespected and are (seemingly) without any control over the situation. Your security, status and very livelihood feel at stake, at work and at home.

It is not easy to fight for yourself and confront someone, but it seems like you're going to have to find a way to ask your friend/coworker, why he deemed it necessary to take your project away from you and assign it to the new guy. This is hard to do particularly when you're shy and introverted. Could you try a Gestalt therapy technique called the 'empty chair technique' where, in this case, you practice what you want to really say to the person about the hurt they've caused and come up with a way to practice asking them the reason they've acted a certain way?

All is not lost, though, from what your described. Right now, you want another job to escape the situation of hurt and fear and sadness and deep down probably anger... but this job seems quite salvageable although it probably doesn't feel like it right now. You need to find a way to have some distance and gain perspective. I'd suggest writing it all down, pros/cons, feelings, fears, etc. in whatever way you feel is best suited to you... could be point form even. Get it all out. put it aside and then look at it at a time when you're feeling stronger, say like after you've exercised.

Depression can be soul crushing and it is not easy when you're SO says they've near reached their limit and now you feel as though you have to act like you're not depressed. That is so hurtful. It is good that you're here, on MSF, posting ...

I have a couple of book recommendations, and as I remember them, I realize that I ought to re-read them myself, as I've been extremely down lately... one is called BORN TO WIN by Dorthy Jongeward and Muriel James (the empty chair technique is in there) and the other is called MASTERING CHANGE by Ichak Adizes ("How to Lead Change for Exceptional Results with Collaborative Leadership").

They've both been helpful to me in the past and you can get them secondhand at abebooks.com, or perhaps on audible, if you prefer...

Also, another technique coming to mind is writing down good qualities about yourself... you could even ask someone close to you to help come you with positive adjectives. This could bolster your self-esteem which is negatively affected when we're depressed (it's like a chicken and egg scenario low self-esteem contributes to the depression and vice versa). For instance, I can tell that you are intelligent, well-written, inquisitive, intellectually curious to name a few.

Look at this list throughout the day. Also, write about a time when you were feeling good and what were the elements present then that helped you to feel good.

I hope what I've said to be helpful...

Sending you many good wishes...