I am not one year out (only 4) but I just wanted to say you have done a great job! I'm scared of gaining weight too because it's so easy to fall back into old habits. It's great you are staying so active!
Congratulations on you success! Great job! Don't know if this will help, but this past week I discovered something that helped me. I ran out of yogurt and have just been eating the other foods I normally eat which don't contain sugar and are very low carb. Even though I was loosing a pound or two every week or two, I lost 3 lbs between Monday and Friday! My hunger was definitely less. I believe that just a small amount of sugar makes a difference for me and I'm guessing others are as sensitive also. Also, given your current exercise routine, you might make sure you are getting enough calories spread out throughout the day. I also know dense Protein fills me up for longer a longer period. So I keep snack size baggies in the freezer of cooked ground chicken/turkey with a little veggies and Beans mixed in. I make it every 2 or 3 weeks, then take for lunch and add a little cheese. Best of luck to you