Only steal from those who can afford to lose what you're taking, don't steal from houses while the homeowners are home, don't take items necessary to someone's well-being (medications, assistance aids).

There are plenty of things that you can take / sell on for money that will cause a minimum of harm to your victim. Losing their flat-screen or Playstation won't hurt them, losing their insulin or the pile of personal papers they had in that drawer will.

You rob only people Luigi would luigise.

be polite, rob your victim in a safe and careful maner and most importantly always make sure to get a copy of the signed and notarised consent form.

Always leave a list of the items you've taken for the victim's insurance purposes.

Persuade your crazy mate to change his name to "robbery" and then report him for being crazy so he gets committed to an insane asylum

Wear a helmet

Actual answer: be a professional penetration tester

Former jewel thief Larry Lawton robs Executive Cigar, Florida, skip the first 1:20 if you want

Remember to put it back after you're done with it, so someone else can use it later.