Giant flying Japanese space robots. With guns.
You know what? I'm going to start an anime series and just call it "Giant flying Japanese space robots with guns." People are going to love it.
Coyote, unrequested assurance and advice incoming. Regarding the feeling that everyone else is accomplishing things while you're not, everyone feels like that. It's especially bad now because of social media, where everyone shares the highlights of what they've done, so we only see of others the most polished and curated parts of their lives. Then we carry those perceptions with us everywhere we go, like weddings where we have to see old friends. If after some introspection, you really, honestly feel like you're not going anywhere, then go ahead and set some goals and plan out how to achieve them. If you're being honest with yourself and you don't think setting and achieving goals is going to work out for you, and you're still going to feel uncomfortable and apprehensive, maybe you should talk to a professional about that.
... I just bloviated a paragraph and deleted it. I'll just give you the TL;DR version instead. There are some things that matter and some things that don't. Sometimes telling the difference can be hard, but if you take a step back and look at your life, you can probably figure out what deserves your care and what doesn't.