People that are "task-oriented" get the chores done even when high. I have to overcome the pain of chronic osteo-arthritis in my legs and spine so that I can continue with my career. When I am high and duty calls I must answer, saddle-up, ride off and get the job done. NO EXCUSES!
Pot doesn't make you lazy, you do.
If you allow some vice to influence your character, you didn't have one to begin with.