For this achievement, you don't have to worry about raising one stat constantly to max, instead raise your level as you want to. When you get to around 65 head back to your home.
Once inside, interact with the blue terminal to your left, next to the storage boxes.
Select customization Data 1 and save your current character into that slot. Do it twice just to make sure it saves.
Scroll down to customization Date 2 and on the bottom right off your screen your see CP and SP. If your CP is 2840 or above then go ahead and select load on your Data 2, this will load a original character but with all your CP points.
simply put all those points into any of the 6 options in the status menu and confirm at the end. Your achievement will then pop and simply go back into the terminal and load your Data 1 to return to your original character.