How to not use the arrow keys any more in vim

I try to wrap my head around the VIM editor since a few months. Unfortunately I do not have enough discipline to use h-j-k-l as my movement keys. But there is a solution that will teach me..

I found it deep inside the .vimrc of my colleague Fabian.

nnoremap <up>    <nop>  
nnoremap <down>  <nop>  
nnoremap <left>  <nop>  
nnoremap <right> <nop>  
inoremap <up>    <nop>  
inoremap <down>  <nop>  
inoremap <left>  <nop>  
inoremap <right> <nop>  

This turns off the arrow keys. A really obvious way of doing it ;)

I will add this to my .vimrc right away!

Wish me luck!