Something I would attempt if it were guaranteed not to fail, would be to make an attempt to file my income tax returns.That is, without any outside help. I would balance the income and expenses, fill in all the deductions correctly, checkout the tax reliefs, read up on the various Government policies and tax rules, understand what is written… I hope you get the drift. I would not stop at that, after engaging in this Himalayan task, I would also expect a huge refund from the tax guys.