Forget about the consequences of failure. Failure is only a temporary change in direction to set you straight for your next success.
You must accept responsibility for your actions but not the credit for your...
You do have to change things as warfare changes.
After graduating from flares and platforms in the early 1970s I started drama school wearing a pair of khaki dungarees with one of my Dad's Army shirts accessorised by a cat's basket doubling as a handbag. Very Lady Gaga.