Staying motivated without sabotaging myself

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hello! My name is Rachel and I'm looking for a person or a group to keep me motivated on a regular basis. I do really well for about a week and then have a moment where I completely sabotage my progress and I'm back to square one. I haven't been able to lose the last 10 pounds for about a year now and I keep getting disappointed. Hoping to gain some great motivators and at the same time I would love to keep others motivated too