I know it's really frustrating to work so hard and yet come out empty handied. Unfortunately, unemployment is way too common.
My older brother went through the same thing even though he went through grad school. He was frustrated and depressed after looking for a position for years. But, he kept on trying out different things to make himself look better while keeping himself busy.
By some miracle he was able to find a job. It was torture, and he never wants to relive those wasted years of trying to find a job.
But, I always find myself respecting people who struggle immensely to find good in life (it could be anything like coping with an illness). Not only because I can sort of relate to their hardships since I experienced some failures in life, but also they motivate me to improve myself since I want to strive to become a better person.