could you be more specific about the physical torture methods, please.
Cut him with a knife making small cuts at first, then dig the knife deeper into the wounds you've already made and twist the blade a little. Whip the open wounds with a thin, flexible branch or any other object that can be used for whipping. Burn him with a lit cigarette, particularly his genitals. Rape his ass with a tree branch until he bleeds and then some, or you could rape him with the knife instead.
Like everyone else, I only know more than some. In here, I'd suggest I know more than many. My intuition tells me you're up against a yes man who happens to output work that is inferior to yours, yet the boss confronts you. Emotional outrage "IS" a sign for change, not just for you, but for all who are involved. Show no anger, very little patience, and tell this person what to do in the presance of your superior. Use your head, if you know you have a better idea then critisize their's and see who gets promoted, since the boss wants to cry to you about stuff. That, or remain as you are, temporary upset, wishful thinking, disrupted focus, lost oppertunity through failure to step up and rule. I think you might pull it off. Might. You have will power, but you're too influenced by emotions. Kill your ego, and replace it with one that serves you.
of course the details matter! The ritual will change according to the motivation.
If you're just disappearing with someone, fast and clean. If you have a sadistic side and want to torture, etc, then you need to plan accordinly...
Now, I agree that you should take care of your issues before killing some person out there. Reckless killers are stupid, messy, I hate them. If you're gonna do it right, before you kill, you have to Live.