I need some help

I have been here for a little over a year and have done very well as you can tell by my ticker.

But I need help getting back I have on, I have only gained a few pounds back but dont wanna get to the point where 2 turn into 5 then 5 turns into 10 and so on and so forth.

I do really good during the week and during the weekend is when I cave.

I feel like I am back at day one, If I just dont eat the bad food then I wont crave it but I have eaten so much bad choices in the last few days the next few days is gonna be hard, I used to not crave any junk food.

Hopefully, I have gotten it out out my mind and back on track...

I am doing a half marathon 13.1 miles in 34 days and I wanna lose 10 more pounds by then hopefully I can.

You're doing awesome! Don't give up on yourself because of a bad weekend. You don't lose it in a weekend nor will you gain it then either.
But remember, what you're doing (the wieght loss) is a marathon, not a sprint. Don't let e bad mile or so ruin the entire process. Get your second wind and you'll do great.
And have a great time at the real marathon as well.

It can get harder as you get to your goal weight! Tough it out!

Make it a non-choice. Don't buy the bad stuff, always have the good stuff easily on hand. If you've got family that insist on having the bad stuff in the house, put it far away, out of reach, definitely out of sight. Try, for a week, to prepack all your meals so you know what you're eating and you don't even have to think about it. That's how I resist temptation. I can't say no, so I make it so I never get to ask the question.

If that doesn't work, you can also use delaying as a tactic. Say, I can have this, but only on Sunday night. Or, I have to choose one junk food for Sunday night. If you give in, you don't get your Sunday night treat. Sometimes, that helps me.

You can also replace the food you crave with good stuff. Sorbet has few calories than icecream, or make a fruit smoothie. Lately, I've been replacing my craving for sugar with brushing my teeth or chewing mentos gum. When I want something crunchy, I chew on ice. Instead of soda, I'm drinking seltzer and tea. I've also found a cure for my late night cravings - going to bed on time! Sleep is calorie free, and studies have shown that the more sleep you get, the better able you are to reach weight loss goals.

Be sure to take stock of your success every night. I love the "complete today's entry" button and seeing my 5 week weight on the screen of my fitness pal. You'll want more of that celebrating success feeling, and you'll be stronger when it comes time to say "no."