|anmor is absolutely correct. You cannot now go back.|
However, depending on where your files were on the hard drive before you did a recovery, there is a very slight chance that you may be able to recover some (definitely not all) of your personal files.
To maximise this possibility first do not write anything more on the hard drive and second you will have to download and run a recovery utility such as RECUVA and see what you can salvage.
You will also need a second hard drive, or partition into which you can store any files you are able to recover. Recovery software is designed to not allow you to write to the same hard drive as you are recovering from for obvious reasons.
Link to RECUVA
Other possible recovery utilities:
☺ When everything else fails, read the instructions.