Here are my top 2, just to get you started:
1- I try to drink as much water as possible throughout the day and even keep a full glass by my bedside at night. I recently read that "water is not a beverage; water is a nutrient". I don't think of water as "what I'm drinking" per se. I think of it as how I'm helping to fuel my body. I find that water soothes and/or solves alot of ills like headaches, false hunger (actually thirst), nighttime wakefulness, dry skin and hair, sore throats, and post workout soreness. One thing I learned from my days as a student Athletic Trainer is that drinking cold water will result in it being more easily assimilated into our cells than water that is at room temperature. I drink chilled water whenever possible.
2- I eat according to the 90/10 rule: 90% of my meals are clean and on target... 10% of them involve "cheats". If I eat 5-6 small meals each day and multiply that by 7, I consume a total of 35-42 meals per week. That means that 3-4 of these meals can be splurges (or contain splurges), and I will still be on the healthy eating track. Reality eating, right? I mean, who wants to never have Godiva Chocolate Cheesecake again... or try and resist Mom's Beef Stroganoff? (No sense in BOTH me and mom being miserable!) Why would you do that to yourself?!!☺ I try and make my cheats/splurges count. Makes me think before I grab something just because it looks good. I have to stop and think: Is THIS how I want to spend my splurge? Is there something I want more? Example: I have a chocolate craving. In my vicinity is a Hershey's bar. Milk Chocolate is not my favorite, but I DO love rich, dark chocolate. I walk away from the Hershey's bar and make a date with my husband for dessert at The Cheesecake Factory that weekend! (No mystery here... I'm going to order the Godiva Chocolate Cheesecake.)