waiting game

Me and my partner have been ttc #2 for 19 months. Never tracked my ovulation or anything just had regular sex every 2 days and nothing. This is my first month using the glow app and tracking everything. Today is my first dpo and I was just wondering what you do to try and stop yourself from testing too early and waiting to see if you get your bfp and how early can you test from. I've found glow to be useful but this waiting I hate