Archibald Marwizi said this quote
“ You must be willing to be disciplined as well as make personal sacrifices. It takes discipline to go through rigorous training and study programs. You need a coach or coaches and sometimes mates to help you stick to your planned program in execution of your responsibilities. To be excellent and effective, the non-essentials must give up time and space in your life – some sacrifices have to be made. Work hard and work smart. ”