
It is a rare adult ADDer who goes an extended time without playing the "Where are my keys?" game. Most play this game on a regular basis. The best way to stop playing this game is to make duplicates or triplicates of all keys.
Carry a duplicate car key in your wallet, separate from your key ring. Leave another spare car key with someone who is generally available. Bury a house key in a secret spot near the house. Better yet, avoid the house key issue altogether by installing keyless door locks. Keyless entries are reasonable in price and often offer a higher measure of security over keyed entries.
