LIFE SUCKS

I cannot find a decent job.

I have had a good life. I am very smart and good looking. I got a scholarship to study at University. Have a Master degree in mathematics (yeah, i said i was smart). I speak 3 languages. I graduated in 2006, and since then the only jobs i have gotten are secretarial jobs. I know that when out there there is some many people with no job at all, i should be grateful to have even this kind of jobs, but i cannot. I busted my ass to get my degree, and i feel so embarrassed to tell my friends that i am receptionist. I have stayed away from most of them, since i cannot stand to hear their work stories. Most of them are not getting rich, but at least get up every day WANTING to go to work. I get jobs like this, and I take them because hey "anything legal and decent is better than unemployment", but a couple of months later I start feeling depressed, I have a very hard time getting up in the morning, start gaining weight. Until one day either I quit, or i am doing my job so wrong that i get let go. And then i get optimistic again, i start doing exercise, sending my CV, etc. Until i get no money left, and then i take a job clerical job, again. Which after some months ends up the same way.
I just cannot get a job that has to do with my career and meets my potential, and needs, and where i will possibly grow.
During my studies one time i got depressed bit time. The doctors recommended that I take a year off and live with my parents while i was in medication. It help then, but i cannot go through that again. And when i am in these jobs, i can feel like I am starting again.
I am getting older, and it will get harder and harder to get "my first job", at least the first in my area. All people my age already have some experience. I wont even be taken as trainee. Damn, i have offered a couple of times to work unpaid the first 6 months, at least to get the XP in my CV, but that is "against company policy".

I just want a job that i can keep without fear that the world will colapse around me.

My family, my teachers, headhunters etc, they all tell me that i am so smart and that i have a very good resume, and very good opportunities. But the reality is that i just dont get the job. It feels like the whole world thinks i should get a good job, but just not from them.

PS. Please dont comment that i am a cry baby. I have worked very hard since i was a teenager to be a mathematician. And I know that other people have it harder than I do, I dont need to be told that right now.