<prompt> Human: Like the title says, Im 29 years old living in California. I have not filed my taxes in 10 years. I have been on payroll with different companies and had taxes taken from my paycheck but I have totally neglected filing my own taxes each year. I have a very lucrative opportunity coming up that requires I show my tax returns. Its been so long I am embarrassed and dont know where to start or how much it will cost to fix this situation. Any help will be greatly appreciated.  <response>: Go to HR Block and get started on filing all past year returns. Be prepared for it to cost you a lot. 