How easy is it to cut your OWN hair,,,if buy an electric hair clipper kit?

with the guards the number 4 and number 3 that's the size of the guard and if you go to the store that's how you buy them on cutting your own hair its pretty hard with any hair style the front is typically easier then the back but i would advise standing in front of a mirror and holding another mirror w/ your other hand to see the back of your head and just try it out but to be safe when your done just ask someone if you missed a spot