need lion install disk

[jackfrost613]

so i bought my macpro second hand a few years back and recently changed my admin password when i was drinking... needless to say why im locked out of my computer which has a crap load of my files for work. if anybody has an install disc or can help please respond.
lion 10.8.5

[jbenwell]

Have a look here

http://osxdaily.com/2011/04/25/change-admin-password-mac/

The bit that might interest you is under "Changing Admin Password in OS X Lion, Mountain Lion, and later"