You’re and your

The difference between it’s and its

• it’s is a combination of it and is
  • “It’s a mouse.” (“IT IS a mouse.”)
  • “No, it’s definitely not a mouse!” (”No, IT IS definitely not a mouse!”)
• The word its is best described as the neuter form of his or her
  • “The guitar looked beautiful but its sound was terrible.”
  • “The cat tried to lick its balls.”

You cannot mix them up!
If you do it right, people will love you!