Hello dutchguy123, welcome to Psych Central!

It does sound like you are depressed but I can also detect that there are some things you could start to change. For example, studying for a job that you have lost interest in, can you talk to the teachers about changing to a different subjct or see what other career choice you could do with it. Have a look at eack area of your life that you are unhappy about, are there any changes there that you could start to make?

I also suggest you look into seeking therapy or at least talk to people you trust about how you are feeling. Faking it and covering it up doesn't work.