Here's a tip! If you happen to go back in time and run into yourself DO NOT HIGH FIVE YOURSELF!
The temptation to bro out with your most compatible bro possible might be extremely tempting indeed, but if you were to make contact your two equal energies would cancel out and your essences would be returned to the cosmos.
Just kidding, didn't mean to scare you. What your parents told you actually is true. The only way to get into heaven is to go back in time and high five yourself, cancel out your energies and ascend to heaven.
JJK, the only way to get into heaven is to kill whoever your dog says.