What does the expression "what ever floats your boat" mean?

1. doing what ever keeps you alive
(person 1: "man, these times are hard."
person 2: "yeah, just the other day i had to steal some fruit from that big farm. felt terrible..."
person 1: "well these days it's whatever floats your boat. even if it's wrong.")

2. doing what makes you feel good about yourself
(person 3: "I'm really strong! look! i can lift 50lbs!"
person 4: "that's not very strong... i can lift 90lbs"
person 5: "whatever floats your boat person 3...")

hope this helps! these are all the ones i know of!