Every day, people go crazy trying to be perfect. To reach this standard, that to most, if not all, is unattainable. Instead, try to focus on the 1% rule.
Try to be 1% better each day than the day before. Example: you want to increase your water intake (most of us either do or could use to). Your starting intake is 20oz of water. The next day you make it to 20.2 oz. You have just become 1% better. The next day, 20.202oz, then 20.406 and so on.
Focusing on making progress over being perfect is the simplest way to succeed, with the least amount of stress.
What are you making progress in today?