Deleting Current Year

Hi All, this is all new to me....So I started my new year and have most of my information entered but just realized that I did not do my year end adjustments from my accountant. I cannot move back to the previous year, as I started a new one.....is there a way I can delete everything I just done and return to the previous year? It's not a big deal and won't take me long to re-enter it again. HELP!