Just had a sad wake up call

It's currently 11:30 at night and I went into the kitchen and grabbed a rice crispy treat and ate it then went to the fridge and went to grab a Pepsi...... I am addicted to Pepsi that is my Achilles heal I know that. I have Pepsi everyday and if I don't I get severe headaches when I told the doctor many years ago he said that I was addicted and the headaches and moodiness was me withdrawing from it. how the hell am i going to leave the Pepsi behind if anyone reads this help i need ideas substitution to soda. well it's official I am not drinking anymore Pepsi.