Your feelings/ thoughts have changed which means your perspective also needs to change. Going out for dinner doesn't address the issue or help process your feelings. You might also have a tendency to push thoughts/ feelings aside if you don't find merit in them, or think they are silly, trivial or similar. Which is counterproductive, because then you risk them festering to where you feel constant dread. So the trick is to acknowledge what you feel down about, maybe finding a way to live with it, change it or so, or just acknowledge yeah that's shitty but there's nothing I can do about it and at least -insert some helpful thing that came out it-. Then maybe just acknowledge you'll feel shit for a couple of days, but it will pass
Not being able to process them and let them kinda pass through you risk making them fester. Thinking about them too much might make you too focused on them and unable to let go. It can be tricky learning this process, but you become more resilient to shitty things that happen when you have.
So I guess some thought, something someone said, something that happened or so, triggered these feelings where you don't feel what you're doing is "enough" anymore. Or something to that effect. So you might need to think about what life you want if you could choose freely, how it would be different from your current one, what options are realistic and what you have to accept might just be shitty but sometimes that's part of life. Maybe you don't feel appreciated by your coworkers, maybe you feel nobody gets you, maybe you feel your work isn't meaningful, maybe you feel you're not at the point in life you imagined you would, maybe there are some goals you wanted to achieve that are nowhere in sight. Etc. Or it could be something entirely unrelated, maybe your dread was triggered by some family feud, a breakup, loneliness, a hurtful comment from someone etc. And that carried over to your feelings about life in general.
There is some baseline conclusion in there somewhere, that tells you what you're really feeling/ thinking and why it makes you down, it can just be tricky to identify as might've pushed it aside and have made it more difficult to recognize the source. Even if you rationally think it's trivial and nothing to get upset about, can fester if not processed. We're humans and sometimes small things upset us even if it's silly. Being human is about being able to recognize that, accept it and being able to process and let go of it.
Now, of course, your issue might not even be silly. I'm just mentioning this because I've seen a lot of people who develop that kind of dread because they are not recognizing their feelings when they find them silly or small, and thus they fester and sometimes grow into a big issue, depression even.