For some unemployed workers whose benefit checks recently stopped because Congress failed to extend the program, it isn’t just the loss of income that stings. Many will have to drop out of college — the most viable option they had to make themselves employable again. “It just makes you want to give up,” said Lori Blythe, 48, of Jackson.After being laid off from Metaldyne in Litchfield in 2008, she signed up for the Trade Adjustment Assistance program, and readjustment allowances paid for her schooling at Baker College. She attends classes full-time with the hopes of becoming a surgical technician and recently made the dean’s list.