I ate horribly for about 5 years and went from 150lbs, active and working at a factory, to sedentary Carbie. I gained 125 lbs over that time. Basically I have 2 choices, well anyone does. I can continue eating like I used to and have my own episode on "my 600lb life", or I can eat the healthy way and lose weight. I'm having issues because I haven't lost any weight in almost a month, but I'm not going to stop. Because I will get smaller eventually. That is honestly enough for me to stick with this!

I just spent nearly the last year eating crap. I'm finally back on track for the last few days. I got a test result that was my own fault, but finally clicked something in my head for me.

Something you might look into is either giving yourself a break, or tightening down on your food plan, whichever was the opposite of what you've been trying to do. So if you've been aiming for keto, go for 75 grams a day, or vice versa. Add lots of veggies at each meal, or leap off into carnivore to break out of your mindset. Mix it up, LEAN on friends for help, and just start with a tiny choice? Back to drinking juice or soda? Get back to water, unsweetened tea... Etc. Start with any choice. Each success fuels future successes.

I think long term motivation is a problem for everyone, you are not alone.

I like to pick short term goals that are reasonable and totally within my control because progress means that I stay motivated. So, things like, get X number of workouts a week, or spend X hours doing yoga, or walk every day for an hour, or lift weights 3x a week, or stay within calories X number of days, or hit my protein target every day.

If I pick goals that I cannot control, like lose X pounds, or be X size, then I get very unmotivated if I don't meet that goal...for me it's just silly to pick something that's outside my realm of control because I need progress in order to want to do this day after day after day, year after year.

I control what I do, I don't always control what my body does.

I have experienced a hard fall 'off the wagon' as they say.

In 2007/2008 I was on a weight loss program that was working for me. I'd lost about 100 lbs and was halfway to my goal, and feeling pretty good. Then everything in my life fell apart. Work, family, friends, everything went bad at the same time. Oh, and the weight-loss program I was on, changed management and the new guys wouldn't honour their 'life-time membership'. I had nowhere to turn to, no support, and everything was awful all at the same time.

That kicked off a major depressive episode which lasted years. Not only did I give up on dieting, I actively ate and drank to excess. I didn't care any more, it was the only source of pleasure in my life. In the space of about three years, I put on about 200 pounds -- roughly double what I'd lost prior to that.

I was able to finally break free of the depression in 2013, and then in 2015 I started to work on losing weight. I didn't get really focused on being healthy though until 2016.

It's been a gradual process, but I found something personally motivating, a long-term goal. Then I broke that down into a bunch of smaller short-term goals. The short-term goals let me feel like I'm making progress on a day-to-day or week-to-week basis. Every little goal I pass, is one step closer to the big one.

And when there's a set-back, it's only a little goal that's been delayed or affected. It's disappointing, but little goals are easy to do-over. The long-term goal is not affected by short-term glitches.

My suggestion is to find something personal that motivates you. I believe it has to come from within; other people might provide inspiration or guidance, but that original spark of motivation has to begin inside you.

Once you've found your motivation, I think the best course is to take it in stages. Like @tcunbeliever says, short-term goals that are within your control.

Small steps, things you can manage / things that are easy (at least to begin with) so you can get some momentum going. Like @KnitOrMiss said, each success leads to more success.

Good luck. It's tough picking up and getting going again, but it's doable.