Step 1) Exit Puberty
Step 2) Have a real socio-economic incentive to get up at 6am.
Step 3) Stop drinking caffeine after 4pm. Stop drinking booze after 8pm. (Stop drinking booze entirely, even)
Step 4) Gene Therapy
Step 5) Find out if you snore. If you're snoring, you're not going to get enough sleep during the night, which will make you groggy af in the early morning.
Step 6) At 6am, when your alarm clock goes off, it helps if you really, really, really need to pee.