How do I stop assuming the worst all the time?
I've noticed that I do this for a lot of situations. For example, I assume that I won't be able to find a job in my field after I finish my degree, I assume that I'll never find love and get married, I assume that I'll never be able to lose the weight I want to lose because it's just too hard for me, I assume that when I move to a new city this summer, I won't make any friends, etc.
It's like I'm accepting defeat before it even happens. It makes me feel really sad and hopeless about my future. It's a self fulfilling prophecy because nobody tries hard when they really believe that there's no hope. It's easy to just force yourself to think happy thoughts, but deep down I still really, truly believe that only the worst is in store for me. I think it's part of why I was diagnosed with MDD. How can I change my mindset?