Imagine this: every year you go on vacation to a location close to home, say Drenthe*. It's fine to go to Drenthe, there are farms where you can pet a little horse, there is a small museum and some sights to see. But then one year, instead of Drenthe you get to go some place really nice and fancy, say Ibiza. It is awesome, you have sun and beach and parties and it gives you much more energy than Drenthe. It makes you realize that there is so much more in the world than just going to Drenthe.
But then the next year, circumstances dictate that your vacation goes to Drenthe again and not Ibiza. Complaining about it makes you feel spoiled because it is a vacation after all, but now that you've seen what vacations can also be like, Drenthe just seems a bit bleak in comparison.
This is how I feel about being back in my old job after having spend last year doing a different job. It feels like a huge first world problem to complain about something I liked before, but at the same time I feel like I keep doing the same thing that is not giving me a lot of energy where in the other job there were so many new and exciting things that were giving me energy. And even when those things would not be new and exciting anymore I believe they fit me better. And knowing that, additional time spent in my current job does not get me to where I'd want to be in my career. I need to figure out how to start the conversation about other opportunities within the company because it seems that people have already forgotten that I said how much I liked Ibiza and now just sent me back to Drenthe thinking I'd be satisfied just being on vacation.
*Feel free to replace this with a location close to your home.